Give an example of electron deficient hydride.

Diborane (B₂H₆) is an example of an electron-deficient hydride. These hydrides do not have a sufficient number of electrons to form normal covalent bonds.

Electron deficient hydrides

The compounds in which the central atom has an incomplete octet are called electron-deficient hydrides.

• These types of compounds are normally formed by group 13 elements.
• The central atom cannot fulfil the octet rule.

Example

Example BH₃ and AlH₃.These compounds generally exist in polymeric forms like B₂H₆, B₄H₁₀ etc.