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Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain.

+2 votes

asked Mar 24, 2019 in Class 9 by kratos

Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain.

structure of the atom
class-9
periodic classification of elements

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1 Answer

+5 votes

answered Jan 8, 2020 by kratos

Best answer

Helium atom has 2 electrons in its outermost shell and its duplet is complete. Hence the valency is zero.

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