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| 1. |
It has been observed that BF_(3) does not hydrolyses completely whereas BCl_(3) or BBr_(3) get easily hydrolysed to form B(OH)_(3) and HX? Explain. |
| Answer» Solution :The greater stability of `B-F` bond as compared to `B-Cl` and `B-Br` bonds is due to additional `pi-` BONDING in `B-F` bonds of `BF_(3)` molecules.The `B-Cl` and `B-Br` bonds are RELATIVELY WEAK and are easily cleaved by water forming strong `B-OH` bonds instead of stable ADDITION product `(BF_(3).OH_(2))` formed by `BF_(3)`. | |