First slide
Kossel - Lewis approach to chemical bonding
Question

Among the following, the electron-deficient compound is

Moderate
Solution

(1) BeCl2 has 4es

(2) CCl4 has 8e1s

(3) PCl5 has 10es.

(4) BCl3 has 6e

So, (1) and (4) are electron-deficient compounds. 

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