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Why Ni & Co has same size though they have different atomic number?

Why Ni & Co has same size though they have different atomic number?

Grade:11

1 Answers

Gaurav
askIITians Faculty 164 Points
6 years ago
Hello student,
The answer is sheilding effect.The atomic size of Fe, Co, Ni is almost same because the attraction due to increase in nuclear charge is cancelled by the repulsion because of increase in shielding effect.

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