- Helium - Wikipedia
Helium (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
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 Definition, Facts, Symbol, Discovery, Property, Uses
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]
- Helium Element | History, Uses, Facts, Physical Chemical Characteristics
Helium is the second most abundant element in the universe and is primarily produced because of radioactive decay It was discovered in 1868 by Jules Janssen and Norman Lockyer The discovery of helium is linked with its primary sources, the sun
- Helium Element- Properties, Uses, Toxicity, Safety - Science Info
Helium element, with the symbol He and atomic number 2, is the second most abundant chemical element in the universe It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas at the top of the periodic table of noble gases It has the lowest boiling and melting points of any element
- Helium - Simple English Wikipedia, the free encyclopedia
Helium is a chemical element It has the chemical symbol He, atomic number 2, and atomic weight of about 4 002602 There are 9 isotopes of helium, only two of which are stable These are 3 He and 4 He 4 He is by far the most common isotope Helium is called a noble gas, because it does not regularly mix with other chemicals and form new compounds
- Helium Facts - Atomic Number 2 or He
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 | Encyclopedia. com
helium (symbol He) Nonmetallic element, a noble gas, discovered in 1868 by Jules Janssen First obtained in 1895 from the mineral clevite, the chief source today is from natural gas
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