Qstnid -10- Do You Expect The Carbon Hydrides Of The Type (C<sub><i>n</i></sub>h<sub>2</sub><sub><i>n</i></sub><sub> + 2</sub>) To Act As &Lsquo;lewis’ Acid Or Base? Justify Your Answer. - 02: Hydrogen - Neet-xi-chemistry

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NEET-XI-Chemistry

02: Hydrogen

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#10
Do you expect the carbon hydrides of the type (C_nH₂_n_{+ 2}) to act as ‘Lewis’ acid or base? Justify your answer.

Ans : For carbon hydrides of type C_nH₂_n_{+ 2}, the following hydrides are possible for

For a hydride to act as a Lewis acid i.e., electron accepting, it should be electron-deficient. Also, for it to act as a Lewis base i.e., electron donating, it should be electron-rich.

Taking C₂H₆ as an example, the total number of electrons are 14 and the total covalent bonds are seven. Hence, the bonds are regular 2e^--2 centered bonds.

Hence, hydride C₂H₆ has sufficient electrons to be represented by a conventional Lewis structure. Therefore, it is an electron-precise hydride, having all atoms with complete octets. Thus, it can neither donate nor accept electrons to act as a Lewis acid or Lewis base.