question_answer

Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:

Which species has one lone pair of electrons on the central atom? (1) \[[ClO_{3}^{-}]\]                        (2) \[Xe{{F}_{4}}\] (3) \[S{{F}_{4}}\]                              (4) \[[I_{3}^{-}]\]

A)  1, 2 and 3 are correct

B)  1 and 2 are correct

C)  2 and 4 are correct

D)  1 and 3 are correct

Correct Answer: D

Solution :

                 In\[ClO_{3}^{-},Cl\]is central atom. It is sp3 hybrid and on it one lone pair of electrons is present. In\[S{{F}_{4}},S\]is central atom. It is sp3d hybrid and on it one lone pair of electrons is present.