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  • Which one of the following molecular hydrides acts as a Lewis acid?Option: 1 <img alt="CH_4" src="https://entrancecorner.oncodecogs.com/gif.latex?CH_

Which one of the following molecular hydrides acts as a Lewis acid?

Option: 1

CH_4


Option: 2

NH_3


Option: 3

H_2O


Option: 4

B_2H_6


Answers (1)

best_answer

Lewis acid is defined as a species that can accept a lone pair of electrons and are electron deficient species. 
CH_4 has a complete octet, NH_3\ and\ H_2O  has one and two lone pairs of electrons respectively hence are lewis bases. While B_2H_6 is an electron-deficient species and acts as lewis acid. 

In B_2H_6, Boron accepts lone pair of electrons in 2p orbitals.

The correct answer is option 4

Posted by

Divya Prakash Singh

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