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Question

The electronic configurations of three elements X, Y, and Z are as follows:
X=2,4

Y=2,7

Z=2,1


(a) Which two elements will combine to form an ionic compound?
(b) Which two elements will react to form a covalent compound?
Give reasons for your choice.

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Solution

Answer :

(a) Elements Y and Z combine to form an ionic compound by the transfer of one electron from Z to Y.
(b) Elements X and Y will react to form a covalent compound because atom X can react with 4 atoms of Y to share their one electron.


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