The electronic configuration of elements A, B, C, D, and E are :

A (2, 8, 7) B (2, 8, 1) C (2) D (2, 6) E(2, 8)

The pair of elements which would combine to form a compound is ______

A & B

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C & D

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D & A

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B & D

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Solution

The correct option is A A & B
Element A has 7 electrons in its outermost shell means it needs one more to attain the stability, where as element B has 1 electron in its outer shell hence it would be easy for it to lose on electron and become stable. Thus elements A & B would combine to form a compound.

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The electronic configurations of three elements X, Y and Z are
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The electronic configuration of elements A, B, C, D, and E are :A (2, 8, 7) B (2, 8, 1) C (2) D (2, 6) E(2, 8)The pair of elements which would combine to form a compound is ______

The electronic configuration of elements A, B, C, D, and E are :

A (2, 8, 7) B (2, 8, 1) C (2) D (2, 6) E(2, 8)

The pair of elements which would combine to form a compound is ______