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InterviewSolution
| 1. |
What are the limitations of octect rule? |
| Answer» Limitations :(1) Hydrogen with 1 electron attains stability by sharing, gaining or losing 1 valence electron. It does not need to complete octet to attain stability. Also, He has only 2 electrons and is stable.(2) Incomplete octet: In certain molecules such as BeH 2\u200b , BeCl 2\u200b , BH 3\u200b , BF 3\u200b , the central atom has less than 8 electrons in its valence shell, yet the molecule is stable.(3) Expanded octet: In certain molecules such as PF 5\u200b , SF 6\u200b , IF 7\u200b , H 2\u200b SO 4\u200b , the central atom has more than 8 valence electrons, yet the molecule is stable. | |