question_answer

Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as

Assertion:  \[SeC{{l}_{4}}\] does not have a tetrahedral structure. Reason: Se in \[SeC{{l}_{4}}\] has two lone pairs.

A) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C) If Assertion is true but Reason is false.

D) If both Assertion and Reason are false.

Correct Answer: C

Solution :

\[SeC{{l}_{4}}\] has see-saw geometry i.e., distorted trigonal pyramidal geometry (VSEPR theory). In this Se molecule has only one lone pair and hence it undergoes \[s{{p}^{3}}d\] hybridisation.