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  4. The ionic radius of which of the following would be maximum?

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Q. The ionic radius of which of the following would be maximum?

Chhattisgarh PMTChhattisgarh PMT 2004

Solution:

As you move across a row of the period of the periodic table, the ionic radius decreases for metals forming cations, as the metals lose their outer electrons orbitals. The ionic radius increases for non-metals as the effective nuclear charge decreases due to the number of electrons exceeding the number of protons.