Q.

The carbonate of which of the following cation is soluble in water?

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a

Ca2+

b

NH4+

c

Na+

d

K+

answer is A, B, C.

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Detailed Solution

Soluble in water Na+K+ and  NH4+ 

because of its high lattice energy.

CaCO3 is insoluble.

Hence, the correct option is A, B and C .

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