An element that is a noble gas with atomic number2.
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Helium is one of the noble gases or inert gases, which means it has a complete electron valence shell so it's not reactive. Unlike gas of atomic number 1 (hydrogen), helium gas exists as monatomic particles.
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Helium is one of the noble gases or inert gases, which means it has a complete electron valence shell so it's not reactive. Unlike gas of atomic number 1 (hydrogen), helium gas exists as monatomic particles
Element Name: Helium
Atomic Weight: 4.002
Element Symbol: He
Fast Facts: Atomic Number 2
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