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Why does Ni2+ has a greater radius than ca
Accepted Answer
The ionic radius of Ni2+ (0.69 Å) is greater than that of Ca2+ (0.99 Å) because the Ni2+ ion has lost two electrons, leaving it with a smaller number of electrons and a greater number of protons in the nucleus. This results in a stronger attraction between the nucleus and the remaining electrons, reducing the ionic radius.
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