Question

what are electron deficient compounds ?is BCl3 electron deficient species? explain​

Answer 1

Explanation:

BCl3 is electron deficient compound because boron has only 6 valence electron and is short of 2 electrons. Therefore it can accept a pair of electrons from nucleophiles. SiCl4 is not electron deficient compound because silicon has 8 valence electrons.

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Answer 2

Answer:

Another type of exception to the Lewis approach to bonding is the existence of compounds that possess too few electrons for a Lewis structure to be written. Such compounds are called electron-deficient compounds.

Yes, BCl3 is an electron-deficient compound. As boron has three valence electrons, it forms 3 single bonds with chlorine, In total the boron atom gives 6 electrons in the outermost shell. It still lacks 2 electrons to complete its octet. So BCl3 is an electron-deficient compound.