Question

X=3s1 Y=3s2 3p4

What is the valency of both X and Y ?

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Answer 1

Answer:

Valency of X is +1

Valency of Y is -2

Explanation:

In Periodic table,

X= 3s1

1st Element of 3 period is Na

And the Valency of Na is +1

Y= 3s2 3p4

6th Element of 3rd period is S

And the Valency of S is -2

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