Elements A and B react to form a compound Ax and By. Elements C and D react to form another compond Cp and Dq. What will be the formula of the compound formed, when A and D react?

(HOTS)

Youe friend is perfectly correct.
‚ÄčThe first compound is AxBy. So the valency of A is y.
The second compound is CpDq so the valency of D is p.
Now the compound made by A and D will be ApDy. The valency of A will written with D and the valency of D will written with A.(criss-cross rule)

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Ans-- ApDy

Solution-AxBy , valency of A is y and valency of B Is x

CpDq, valency of C is q and valency of D is q

A D

y p

AyDp

  • 1

Ans-- ApDy

Solution-AxBy , valency of A is y and valency of B Is x

CpDq, valency of C is q and valency of D is q

A D

y p

AyDp

  • -1
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