Question

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Explain, with suitable examples, the following:
i) Electron deficient ii) Electron-precise iii)Electron-rich hydrides

With Examples​

Answer 1

Explanation:

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(i) Electron-deficient compounds of hydrogen: - The hydrides of some compounds are deficient of electrons as these elements like gp 13 elements do not have enough electrons. Examples are BH3 and AlH3 . . These compounds exist in polymeric form to make up for the deficiency of electrons. Example B2H6, B4H10 .

(ii) Electron- precise compounds of hydrogen :- The elements which form hydrides have exact number of electrons required for forming bond. Example of such elements are C and Si.They form CH4 and SiH4.The electrons are Precise and hence they are called as electron- precise compounds of hydrogen.

(iii) Electron-rich compounds of hydrogen :- Some elements like N, P S Cl etc have more electrons than required for bonding. Some of their compounds are NH3, PH3, and HCl. Since there is a excess of electrons these hydrides are called electron-rich compounds of hydrogen.

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Answer 2

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❇️❇️ANSWER❇️❇️

ELECTRON DEFICIENT : -

An electron-deficient compound is one in which there is an insufficient number of electrons to complete the octet of the central atom.

example - B2H6, B4H10.

ELECTRON PRECISE : -

The elements which form hydrides have exact number of electrons required for forming bond.

Example of such elements are C and Si.

They form CH4 and SiH4

ELECTRON RICH HYDRIDES :-

Some elements like N, P S Cl etc have more electrons than required for bonding. Some of their compounds are NH3, PH3, and HCl. Since there is a excess of electrons these hydrides are called electron-rich compounds of hydrogen.

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