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Which of the following triads have approximately equal size ?A. `Na^(o+), Mg^(2+), Al^(3-)` (isoelectronic)B. `F^(ɵ), Ne, O^(2-)` (isoelectronic)C. `Fe, Co, Ni`D. `Mn^(1+), Fe^(2+), Cr` (isoelectronic) |
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Answer» Correct Answer - C Triads of group `VIII` (groups `8, 9` and `10`) have approximately the same size, e.g. Ist triad, `Fe, Co, Ni` Iind triad, `Ru, Rh, Pd` IIIrd triad, `Os, Ir, Pt` |
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