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| 1. |
Account for the following: Tendency to form pentahalides decreases down the group in Group 15 of the periodic table. |
| Answer» Solution :Tendency to form pentahalides decreases down the group in Group 15 of the periodic table. This is DUE to inert pair EFFECT. The configuration of Group 15 elements in the outermost orbit is `ns^(2) NP^(3)`. The `ns^(2)` electrons BECOME inert and do not participate in the bonding as we MOVE downwards. | |