Chemical Bonding and Molecular Structure - Result Question 16
####16. Which of the following is not a correct statement?
[2006]
(a) The cannonical structures have no real existence
(b) Every $A B_5$ molecule does in fact have square pyramidal structure
(c) Multiple bonds are always shorter than corresponding single bonds
(d) The electron-deficient molecules can act as Lewis acids
Show Answer
Solution:
- (b) Statement (a), (c), (d) are correct. Statement (b) is incorrect statement.
$A B_5$ may have two structures as follows :
Square Pyramidal
Trigonal Bipyramidal Individual cannonical structures do not exist. The molecule as such has a single structure, which is the resonance hybrid of the cannonical forms.
