First slide
13th group or boron group
Question

Which one of the following is not an electron deficient compound
 

Moderate
Solution

Electron deficient compounds are those for which the octet is incomplete. In BCl3, Boron has only 6 electrons in outermost shell. Similarly, in AlCl3​, Al has only 6 electrons in the outermost shell. Al2​Cl6​ is not an electron deficient compound since it has a coordinate bond among Al and Cl atoms between one AlCl3 molecule and the other, In B2​H6also, boron has only 6 electrons in the outermost shell.

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