Question

Explain the classification of covalent hybrides with an ecample

Answer 1

Answer:

Explanation:

Covalent hydrides are classified as electron rich, electron precise and electron deficient hydrides.

(a) Electron rich molecular hydrides: These hydrides have one or more lone pairs of electrons around the central more electronegative element. For example

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H � O � H, H � N � H, H � F:

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                     H

(b) Electron precise molecular hydrides: Elements of group 14 form such hydrides. The bond length increases on going down the group. A common example of electron precise molecular hydrides is CH4.

(c) Electron deficient molecular hydrides: These hydrides have lesser number of electrons than that required for writing the conventional Lewis structure. A common example of such molecular hydride is diborane, B2H6.