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| 1. |
The H - N - H angle value is higher than H-P-H, H-As-H and H-Sb-H angles. Why ? |
| Answer» Solution :In group-15, moving from nitrogen to bismuth, the atomic size INCREASES and electronegativity decreases as a result the electron DENSITY on central decreases. Also, the `sp_3` character of central ATOM becomes less distinct. This results in DECREASE of bond ANGLES. | |