question_answer

                Among the following the electron deficient compound is:                                                           

A)                 \[BC{{l}_{3}}\]

B)                 \[CC{{l}_{4}}\]

C)                 \[PC{{l}_{5}}\]

D)                 \[BeC{{l}_{2}}\]

Correct Answer: A

Solution :

                                in \[BC{{l}_{3}}\] boron contains six                 electrons in its valence shell so, it is capable to accommodate one pair of electrons. Hence, it acts as Lewis acid or electron deficient compound. As we know that Lewis acids are the substances having a tendency to accept a pair of electron.