Question

find out the velency​

Answer 1

(X) The valency is 3 and the element name is Boron

(Y) The valency is 0 and the element name is Fluorine

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Answer 2

Answer:

3+ and -2

Explanation:

From fig.X

p = 5 = e ( electrons ) , n = 6

therefore,

electronic configuration = 2,3

hence valency = 3+ as it will donate its 3 electrons to get stable configuration.

From fig.Y

p = 8 = e  , n = 10

electronic configuration = 2,6

hence valency = -2 as it will gain 2 electrons to get stable configuration

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