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| 1. |
Why B-Xbond distance in BX_(3) is shorter than theoretically expected value ? |
| Answer» Solution :This is due to`ppi-ppi`BACK bondingof the FULLY filled p-orbital of halogen(X) into the empty p-orbital of boron. As a result, B-X bondhas some double bondcharacter and hence B-X bond is SHORTER tha expected. | |