Question

GIVE SCIENTIFIC REASON
Helium is an inert element

Answer 1

Answer:

Helium is an inert element as its outermost shell is filled and it cannot accept or donate electrons.

So in theory, it does not participate in any reaction. Thus it is inert, although it is an exception to Octet Rule.

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Answer 2

Answer:

Helium is an inert gas because it is a very stable gas and it doesn't react with any other element. it is also known as a noble gas. it has the electronic configuration of 2 electrons in K shell. It makes the duplet,and it has a valency = 0 that is it does not gain or lose any electron because the valence shell is already full.That makes it a very stable gas.