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Q.

The charge on a cation ' M ' is +2 and anion ' A ' is -3. The compound formed has the formula

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a

M3 A2

b

M2 A

c

M2 A3

d

MA2

answer is B.

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Detailed Solution

According to the criss-cross method used for writing the chemical formula for the ionic compound, the charge on a cation 'M' is +2 and anion 'A' is –3.

Hence the compound is M3A2.

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