what is the heliam........
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★ Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements.
- Symbol: He
- Atomic mass: 4.002602 u
- Atomic number: 2
- Electron configuration: 1s2
- Boiling point: -268.9 °C
- Discoverers: Pierre Janssen, Per Teodor Cleve, Norman Lockyer
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Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements
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