Molecular hydrides are classified as electron deficient, electron precise and electron rich compounds. Explain each type with two examples.
Molecular hydrides are classified as electron deficient, electron precise and electron rich compounds. Explain each type with two examples.
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1 Answer
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This is a short answer type question as classified in NCERT Exemplar
(a) Electron deficient hydrides are those that lack sufficient number of electrons to form typical covalent bonds. Group 13 hydrides, for example (BH3, AlH3, etc.).
(b) Electron precise: Electron precise hydrides are those that have the exact number of electrons required to form covalent bonds. Group 14 hydrides, for example (CH4, SiH4, GeH4, SnH4, PbH4 etc.). They are tetrahedral in shape.
(c) Electron rich hydrides: Electron rich hydrides are those that have more electrons than are required to create conventional covalent bonds. Hydrides of groups 15 to 17. (NH3, PH
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