In: Chemistry
2. Consider the following molecules or ions: PF5,
PCl3, ClO2
+ , and BrF5. Answer the following
questions based on the Lewis structures and VSEPR theory prediction
of their molecular shapes.
(a) Which one has only bond angles of 109.5°?
(b) Which one has only bond angles of 120°?
(c) Which one has bond angles of 90 and 180°?
(d) Which one has bond angles of 90, 120, and 180°?
SOLUTION:
Molecule/ ion |
Shape |
Bond angles |
PF5 |
Trigonal Bypyramidal |
90o , 120o |
PCl3 |
Trigonal pyramidal |
109.5o |
ClO2+ | Bent | 120o |
BrF5 |
Square pyramidal |
90o |
(a) PCl3 - 109.5o
(b) ClO2+- 120o
(c) None
(d) None