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Period in periodic table: 1 Block in periodic table: p Shell structure: 2 CAS Registry: 7440-59-7 Helium atoms have 2 electrons and theshell structureis 2. Theground state electronic configuration of neutral helium is1s2and theterm symbol of heliumis1S0. ...
Gaseous chemical element, symbol: He, atomic number: 2 and atomic weight 4,0026 g/mol. Helium is one of the noble gases of group O in the periodic table. It’s the second lightest element. The main helium source in the world is a series of fields of natural gas in the United States...
SymbolHeA very lightweight, colorless, odorless element that is a noble gas and occurs in natural gas, in radioactive ores, and in small amounts in the atmosphere. It has the lowest boiling point of any substance and is the second most abundant element in the universe. Helium is used to...
Helium (He) - Helium is the element whose atomic number is 2. It is denoted by the symbol He. To learn more about the physical & chemical properties of helium and its uses visit BYJU'S.
Helium (pronunciation: HEE-lee-em) is a colorless, odorless element classified as a non-metal, belonging to the group of inert gases in the periodic table and is represented by the chemical symbol He[1, 2, 3]. It is a monoatomic gas that forms weak diatomic molecules only at temperature...
Helium is the chemical element with atomic number 2 and an atomic weight of 4.002602, which is represented by the symbol He. It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas that heads the noble gas group in the periodic table. Its boiling and melting points are the...
Helium is atomic number 2 on the periodic table, with the element symbol He. It is a colorless, flavorless gas, best known for its use in filling floating balloons. Here is a collection of facts about this lightweight, interesting element: ...
A gaseous chemical element, symbol He, atomic number 2, and atomic weight 4.0026; one of the noble gases in group 0 of the periodic table. McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc. The following article is from The ...
helium: Symbol He. A colourlessodourless gaseous nonmetallic elementbelonging to group 18 of theperiodic table ; a.n.2; r.a.m. 4.0026; d. 0.178 g dm–3; m.p.–272.2°C (at 20 atm.); b.p. –268.93°C.The element has the lowest boilingpoint of all substances and can be solidifi...