Question

What are electron deficient compounds explain with example?

Answer 1

Electron deficient compounds:

• Compounds wherein the central atom lacks eight electrons in its outer shell or possesses eight electrons but can widen the valency owing to the existence of unoccupied d – orbitals.
• In brief, electron-deficient compounds lack enough electrons to fulfill the octet of the central atom.

Examples:

• Electron-deficient compounds are those with less than $8$ electrons in their valence shells, such as ${\mathrm{B}}_2{\mathrm{F}}_6,{\mathrm{Al}}_2{\mathrm{Cl}}_6$, and others.

Boron family example of Electron deficient compounds:

• Boron, for example, with the electronic structure $\left[\mathrm{He}\right]2{\mathrm{s}}^{2}2{\mathrm{p}}^1,$ creates compounds known as electron-deficient compounds.
• Boron has just three valence electrons, however, four orbitals are available to house these electrons.
• Other boron family members, such as Aluminum, Gallium, Indium, and Thallium, have a proclivity to lose valence electrons and generate ionic ${\mathrm{M}}^{3+}$ entities in their compounds.