Identify the wrong statement in the following | vedclass

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(C) $1$. On moving from left to right across a period,the proton number and magnitude of nuclear charge increase,leading to a decrease in atomic radii

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Amongst isoelectronic species,smaller the positive charge on the cation,smaller is the ionic radius.

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(C) $1$. On moving from left to right across a period,the proton number and magnitude of nuclear charge increase,leading to a decrease in atomic radii. $2$. On moving down a group,atomic radii increase due to the addition of new shells. $3$. For isoelectronic species,the ionic radius increases as the positive charge on the cation decreases or the negative charge on the anion increases. $4$. Therefore,the statement 'smaller the positive charge on the cation,smaller in the ionic radius' is incorrect,because as the positive charge on a cation decreases,the ionic radius actually increases.

Identify the wrong statement in the following.

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