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Question
What do you understand by electron-rich compounds of hydrogen? Provide justification with a suitable example.
Solution
Molecular hydrides are classified on the basis of the presence of the total number of electrons and bonds in their Lewis structures as:
Electron-rich hydrides:
An electron-rich hydride contains excess electrons as lone pairs e.g. NH3.
There are three regular bonds in all with a lone pair of electrons on the nitrogen atom.
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