The molecular formula of a compound is XY, where Y is a diatomic
Non-metal with 5 valence electrons, while X is a metal.
The valency of Y is __1____. Therefore the valency of X is __2____.
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Valency of Y is 3
&
Valency of X is also 3
Explanation:
Because, the non metal (Y) contains 5 valence electrons so it is easy to take 3 extra electron to complete it's octate
&
the metal is reacting with the non metal so it means that it has 3 electrons in its outermost shell . and it is easy to donate/give 3 electrons besides gaining 5 electrons to complete it's octate
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