Question

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

A
True
B
False

Solution

## The correct option is A TrueHelium atom with electronic configuration  $$1s^{2}$$ has two valence electrons but since it is a noble gas, it does not form a chemical bond, its duplet is complete.Therefore, valency is zero.Chemistry

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