question_answer

Which one of the following has the regular tetrahedral structure                                              [AIEEE 2004]

A)                 \[BF_{4}^{-}\]   

B)                 \[S{{F}_{4}}\]

C)                 \[Xe{{F}_{4}}\] 

D)                 \[{{\left[ Ni{{(CN)}_{4}} \right]}^{2-}}\] (Atomic no. : \[B=5,S=16,Ni=28,Xe=54\])

Correct Answer: A

Solution :