1.

Total number of molecules, in which each covalent bond is comprised of effective back bond. BF_(3), N(SiH_(3))_(3), PF_(3),, POF_(3), B(OH)_(3), O(SiH_(3))_(2), BFH_(2), BF_(2)(NH_(2)), NH(SiH_(3))_(2)

Answer»


Solution :BACK bond FOUND in each covalent bond in `toBF_(3), PF_(3), POF_(3)`


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