Question
Which of the following shapes of $$S{F_4}$$ is more stable and why?
Which of the following shapes of $$S{F_4}$$ is more stable and why?
A.
(i), due to $$3\,lp{\text{ - }}bp$$ repulsions at $${90^ \circ }.$$
B.
(ii), due to $$2\,lp{\text{ - }}bp$$ repulsions.
C.
Both are equally stable due to $$2\,lp{\text{ - }}bp$$ repulsions.
D.
Both are unstable since $$S{F_4}$$ has tetrahedral shape.
Answer :
(ii), due to $$2\,lp{\text{ - }}bp$$ repulsions.
Solution :
In structure (ii), $$lp{\text{ - }}bp$$ repulsions are minimum.
In structure (ii), $$lp{\text{ - }}bp$$ repulsions are minimum.