Question

An element X (at no 20) combined with an element Y (at no 9). How many bonds will be formed between different number of atoms of X and Y?​

Answer 1

Answer:

An element X oif atomic number 12 combines with an element Y of atomic number 17 to form a compound

. State the nature of chemical bond in

and show how the electron configurations of X and Y change in the formation of this compound.

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Answer 2

Answer:

Atomic no. of X is 20

So, electronic configuration is 2,8,8,2

Therefore, X must donate 2 electrons to attain stability

Valency of X is 2+

Atomic no. of Y is 9

electronic configuration is 2,7

So, Y must accept 2 electrons to attain stability

Valency of Y is 2-

If we interchange the valencies

X2Y2

=XY = X-Y

So only one bond will be formed between atoms of X and Y

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