Question

What are electron deficient compounds are bcl3 and sicl4 electron deficient species explain

Answer 1

Answer:

The molecule in which central atom has lesser electrons than octet are electron deficient. For example in AlCl3.

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.

Answer 2

Answer :

Electron deficient hydrides: Compounds in which central atom has incomplete octet, are called electron deficient hydrides. For example, BeH2, BH3 are electron deficient hydrides.

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(ii) Electron precise hydrides: Those compounds in which exact number of electrons are present in central atom or the central atom contains complete octet are called precise hydrides e.g., CH4, SiH4, GeH4 etc. are precise hydrides.

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(iii) Electron rich hydrides: Those compounds in which central atom has one or more lone pair of excess electrons are called electron rich hydrides, e.g.,NH3, H2O.