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| 1. |
The atomic sizesof Fe,Co and Ni are nearlysame, Explain with reason. Or Atomic size of 3dseries elements from chromium to copper is almost the same. Give reason. |
| Answer» Solution :As we MOVE from LEFT to right alonga TRANSITIONSERIES, the nuclear change increases which tends to decrease the size but the addition of ELECTRONS in thed-subshellincreases the screening effect which counter balances the effect of increased nuclear CHARGE. | |