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Question

The valencies of magnesium and oxygen respectively are:


A

-2, -2

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B

-2, +2

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C

+2, -2

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D

2, 2

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Solution

The correct option is D

2, 2


Valency is the combining capacity of the elements. It will not have any sign. The valencies of magnesium and oxygen respectively are 2, 2.


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