Helium atom has 2 electrons in its valence in its valence shell but it's valency is not 2. explain. ( it's urgent please)
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it is because helium atom has 2 electrons in its k shell and it is the last shell
thus valence electrons=2
and k shell electrons =2
thus 2-2=0
thus helium atom has a valency of 0
thus valence electrons=2
and k shell electrons =2
thus 2-2=0
thus helium atom has a valency of 0
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Answer:
Helium atom has 2 electrons in its outermost shell and its duplet is complete. Hence the valency of helium atom is zero. It can neither gain nor lose electrons.
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