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Earn 100

What is covalency?
Important Questions on Chemical Bonding and Molecular Structure
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Some compounds along with their chemical formulae are given below.
Compounds | Chemical Formulae |
Magnesium nitrate | |
Aluminium nitride | |
Zinc phosphate | |
Calcium oxide |
On the basis of formulae given above, the valencies or charges on ions are given below. Select the incorrect option.

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Limestone is _____.
(A) (B) (C)
Enter your correct answer as A, B or C.

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The formula of washing soda is _____.
(A) (B) (C)
Enter your correct answer as A, B or C.

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(i)
(ii)
(iii) and
(iv) is are

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