Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. The higher the associated electronegativity number, the more an element or compound attracts electrons towards it. The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Lead is a heavy metal that is denser than most common materials. The chemical symbol for Antimony is Sb. I chose this sample to represent its element in my Photographic Periodic Table Poster. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. The chemical symbol for Xenon is Xe. It occurs on Earth as the decay product of various heavier elements. We use cookies to ensure that we give you the best experience on our website. Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily unreactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. © 2019 periodic-table.org / see also Helium is element number 2 on the periodic table. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. The ground state electronic configuration of neutral helium is 1s2 and the term … The chemical symbol for Rhodium is Rh. All other periods in the periodic table contain at least eight elements, and it is often helpful to consider periodic trends across the period. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. The bulk properties of astatine are not known with any certainty. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. The chemical symbol for Americium is Am. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. Helium is used as an ideal gas for filling of balloons, and airships, as it is lighter than air and is non-flammable. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. Caesium has physical and chemical properties similar to those of rubidium and potassium. The chemical symbol for Helium is He. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. Visualize trends, 3D orbitals, isotopes, and mix compounds. Helium is the second lightest and second most abundant element in the observable universe (hydrogen is the lightest and most abundant). The chemical symbol for Neptunium is Np. Cerium is the second element in the lanthanide series. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. Radon is a radioactive, colorless, odorless, tasteless noble gas. and Gay-Lussac, L.-J. Compare Helium and Carbon. Comprehensive data on the chemical element Helium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Helium. Hafnium’s large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. The chemical symbol for Gadolinium is Gd. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. The chemical symbol for Caesium is Cs. The chemical symbol for Selenium is Se. Francium is a highly radioactive metal that decays into astatine, radium, and radon. 2) You may not distribute or commercially exploit the content, especially on another website. French astronomer Pierre Janssen in 1868 found proof that a new element existed in the Sun. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Under standard conditions, it is the lightest metal and the lightest solid element. Pure radium is silvery-white alkaline earth metal. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. www.nuclear-power.net. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. Electronegativity is related with ionization energy and electron affinity. Compare Helium and Carbon on the basis of their properties, attributes and periodic table facts. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Platinum is one of the least reactive metals. Francium is an alkali metal, that has one valence electron. Iron is a metal in the first transition series. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. Yttrium is a chemical element with atomic number 39 which means there are 39 protons and 39 electrons in the atomic structure. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. Radon is a chemical element with atomic number 86 which means there are 86 protons and 86 electrons in the atomic structure. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. The chemical symbol for Cerium is Ce. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). Major advantage of lead shield is in its compactness due to its higher density. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. Krypton is a member of group 18 (noble gases) elements. The origin of the name comes from the Greek word helios meaning sun.It is a light, odourless, colourless inert gas. Neon is a chemical element with atomic number 10 which means there are 10 protons and 10 electrons in the atomic structure. The chemical symbol for Barium is Ba. Helium and neon, the two lightest noble gases, have been traditionally positioned by IUPAC in the Group 18 of the Periodic Table of Elements, together with argon, and other unreactive or moderately reactive gaseous elements (krypton, xenon, radon), and oganesson. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. The helium atom is trapped inside a fullerene which is made up entirely of carbon. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. Cerium is also traditionally considered one of the rare-earth elements. Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Periodic Table of Elements Element Helium - He. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. The periodic table game available on this page is for entertainment purposes only, and should not be used to grade students on their knowledge of chemical elements. 1) You may use almost everything for non-commercial and educational use. Gold is a transition metal and a group 11 element. The chemical symbol for Thorium is Th. Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Its extreme rarity in the Earth’s crust, comparable to that of platinum. 'Sun') is a chemical element with the symbol He and atomic number 2. CAS Registry: 7440-59-7. The chemical symbol for Krypton is Kr. Carbon is one of the few elements known since antiquity. This WebElements periodic table page contains properties of free atoms for the element helium E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Compare elements on more than 90 properties. Astatine is the rarest naturally occurring element on the Earth’s crust. Medium Game Level. Helium was first discovered in the Sun. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. It is a soft, silvery-white alkali metal. Actinium is a soft, silvery-white radioactive metal. Helium is the second element on the periodic table, with atomic number 2 and element symbol He. Helium is the second lightest and second most abundant element in the observable universe (hydrogenis the lightest and most abundant). The chemical symbol for Bromine is Br. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. Lawrencium is the final member of the actinide series. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. The chemical symbol for Tantalum is Ta. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Helium is used as carrier gas in chromatography technique. There is a continuous production of helium on the Earth (via radioactive decay), but it readily escapes the Earth’s atmosphere and enter the space. Helium is the second most abundant element in the universe. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. It is a colorless, flavorless gas, best known for its use in filling floating balloons. Lead is widely used as a gamma shield. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. The chemical symbol for Radon is Rn. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. The chemical symbol for Fluorine is F. Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. The chemical symbol for Iodine is I. Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. Chlorine is a yellow-green gas at room temperature. is a rare earth element with a metallic silver luster. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. Arsenic is a chemical element with atomic number 33 which means there are 33 protons and 33 electrons in the atomic structure. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. Helium is widely used as coolant in magnetic resonance imaging (MRI) for medical scanning. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. The chemical symbol for Dysprosium is Dy. The chemical symbol for Plutonium is Pu. When shown an element symbol, find the corresponding … The chemical symbol for Promethium is Pm. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. Periodic Table What is the Periodic Table? A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. The chemical symbol for Mendelevium is Md. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. The chemical symbol for Actinium is Ac. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Helium-3 (3 He, tralphium, see also helion) is a light, stable isotope of helium with two protons and one neutron (the most common isotope, helium-4, having two protons and two neutrons in contrast).Other than protium (ordinary hydrogen), helium-3 is the only stable isotope of any element with more protons than neutrons. What is Uranium in the Environment - Definition, What is Quark in the Standard Model - Definition, What is Electron in the Standard Model - Definition. The chemical symbol for Platinum is Pt. The chemical symbol for Astatine is At. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. 113Cd has specific absorption cross-section. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. The chemical symbol for Francium is Fr. Uranium is a silvery-white metal in the actinide series of the periodic table. The Cookies Statement is part of our Privacy Policy. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. The chemical symbol for Beryllium is Be. By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. The chemical symbol for Oxygen is O. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. 1867 reads; Helium Element: Helium is an inert gas which is the simplest and foremost compound in the group of inert gases. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. In nuclear reactors, promethium equilibrium exists in power operation. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. More links in ... //youtu.be/M6xZZiaLOV4 Donald Duck voices and floating balloons. Helium is the second element on the periodic table.It is located in period 1 and group 18 or 8A on the righthand side of the table. The chemical symbol for Lawrencium is Lr. The information contained in this website is for general information purposes only. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin. The chemical symbol for Gold is Au. When shown an element name, find the corresponding element atomic number and symbol in the periodic table as quickly as you can!. Lanthanoids comprise the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. The chemical symbol for Titanium is Ti. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). The name samarium is after the mineral samarskite from which it was isolated. The chemical symbol for Boron is B. Nickel is a silvery-white lustrous metal with a slight golden tinge. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. Fermium is a member of the actinide series. Nickel belongs to the transition metals and is hard and ductile. The chemical symbol for Zinc is Zn. The chemical symbol for Thulium is Tm. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. The chemical symbol for Germanium is Ge. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Fully descriptive writeups. Infotopia presents: Helium. Detailed decay information for the isotope helium-3 including decay chains and daughter products. In 1895 Ramsay discovered helium in the uranium mineral cleveite while it was independently discovered in cleveite by the Swedish chemists Cleve and Langlet at about the same time. Therefore the electronegativity is greatest at the top-right of the periodic table and decreases toward the bottom-left. Complete and detailed technical data about the element Helium in the Periodic Table. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. He called the element helium. The chemical symbol for Erbium is Er. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. The chemical symbol for Strontium is Sr. Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. The chemical symbol for Samarium is Sm. 90 electrons in the atomic structure odourless reactive gas, best known for its use in filling balloons! And 34 electrons in the atomic structure strontium is a post-transition metal and a column is a chemical with... An atom to attract electrons towards this atom of exotic astronomical objects such as white stars... 33 electrons in the periodic table is an intrinsically brittle and hard material, making it difficult to work kelvins! And 12 electrons in the atomic structure purposes only amounts are found in native form as elemental crystals high 2000... State electronic configuration of neutral helium is a chemical element with atomic number 88 means. 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