Question

How are valence electrons different from valency?

Answer 1

valence electrons are the electrons present in the valence shell whereas valency is the combining capacity of the element

for example: oxygen electronic configuration:2,6

valence electron is 6 but valency=2(if valence electron is greater than 4 then valency is 8-valence electron)

Answer 2

Valence electrons are the number of electrons in the outermost shell of an atom.
Valency is the number of electrons an atom takes or gives to become stable.
Valency depends on the number of valence electrons.


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