Q.

A cation is always smaller than atom  because

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a

the nuclear charge remains the same while inter-electronic repulsion increases

b

by loss of one or more electrons, the last shell of the atom may vanish

c

the attraction of nucleus, i.e., protons per electron increases

d

both (a) and (c)

answer is D.

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Detailed Solution

Cations are smaller than anions as in case of cations effective nuclear charge on valence electrons increases

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