Helium - Wikipedia
WEBHelium (from Greek: ἥλιος, romanized: helios, lit. 'sun') is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table.
Helium | Definition, Properties, Uses, & Facts | Britannica
WEBAug 16, 2024 · Helium, chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element, helium is a colorless, odorless, and tasteless gas that becomes liquid at -268.9 degrees Celsius.
Helium - Element information, properties and uses | Periodic Table
WEBElement Helium (He), Group 18, Atomic Number 2, s-block, Mass 4.003. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Helium (He) - Periodic Table
WEBHelium is the 2nd element in the periodic table and has a symbol of He and atomic number of 2. It has an atomic weight of 4.00260 and a mass number of 4. Helium has two protons and two neutrons in its nucleus, and two electrons in one shell.
10 Helium Facts - Atomic Number 2 on the Periodic Table
WEBJan 27, 2020 · Helium is the second element on the periodic table, with atomic number 2 and element symbol He. It's the lightest noble gas. Here are ten quick facts about the element helium. Check the full listing for helium if you would like additional element facts.
helium summary | Britannica
WEBA noble gas, it is colourless, odourless, tasteless, completely unreactive, and nontoxic. First found by spectroscopy of the Sun’s atmosphere in 1868, it is the second most abundant and second-lightest element in the universe (after hydrogen).
Helium Facts (Atomic Number 2 or He) - ThoughtCo
WEBSep 2, 2021 · 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:
Helium Facts - Atomic Number 2 or He - Science Notes and …
WEBMay 18, 2015 · Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. Helium is the second lightest and second most abundant element in the universe .
Helium - American Chemical Society
WEBThe second most abundant element in the universe, helium is scarce on Earth. A product of nuclear fusion and radioactive decay, it is the lightest noble gas, colorless, odorless, and inert with a low boiling point.
Helium - Periodic Table
WEBCrystal Structure. Face Centered Cubic. History. French astronomer Jules Janssen obtained the first evidence of helium during the solar eclipse of 1868. Norman Lockyer and Edward Frankland suggested the name helium for the new element. In 1895, Sir William Ramsay discovered helium in the uranium mineral cleveite.