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what is the heliam........​

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Answered by Anonymous
2

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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

Answered by masingh111
1

Answer:

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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