From the given set of options the one which is showing incorrect deviation in the bond angle has to be found. Concept Introduction: V S E P R theory ( V a l a n c e s h e l l e l e c t r o n p a i r r e p l u s i o n t h e a r y ) is an important theory in chemistry which is useful in predicting the structure of a molecule. According to this theory, the shape of the molecules depends upon the number of electrons around the central atoms. The valance electrons in an atom will repel each other. The molecule will adopt a structure in such a way that the electronic repulsion is minimised. According to V S E P R theory, When two bond pairs of electrons are present the molecule will have a linear structure of bond angle 180 ° When three bond pairs of electrons are present the molecule will have a trigonal planar structure of bond angle 120 ° When for bond pairs of electrons are present the molecule will have a tetrahedral structure of bond angle 109.5 ° When five bond pairs of electrons are present the molecule will have a trigonal bi-pyramidal structure of bond angles 90 ° and 120 ° When six bond pairs of electrons are present the molecule will have a octahedral structure of bond angle 90 ° When seven bond pairs of electrons are present the molecule will have a pentagonal bi-pyramidal structure of bond angles 90 ° and 72 ° When lone pairs of electrons are present there will be a deviation from the ideal structure, as the repulsion between lone pairs of electrons are more than that of bond pairs.

Question

Want to see the full answer?

Answer 1

Question

Chapter 7, Problem 7.15QP

Interpretation Introduction

Interpretation:

From the given set of options the one which is showing incorrect deviation in the bond angle has to be found.

Concept Introduction:

VSEPR theory (Valance shell electron pair replusion theary) is an important theory in chemistry which is useful in predicting the structure of a molecule. According to this theory, the shape of the molecules depends upon the number of electrons around the central atoms. The valance electrons in an atom will repel each other. The molecule will adopt a structure in such a way that the electronic repulsion is minimised.

According to VSEPR theory,

When two bond pairs of electrons are present the molecule will have a linear structure of bond angle 180°

When three bond pairs of electrons are present the molecule will have a trigonal planar structure of bond angle 120°

When for bond pairs of electrons are present the molecule will have a tetrahedral structure of bond angle 109.5°

When five bond pairs of electrons are present the molecule will have a trigonal bi-pyramidal structure of bond angles 90° and 120°

When six bond pairs of electrons are present the molecule will have a octahedral structure of bond angle 90°

When seven bond pairs of electrons are present the molecule will have a pentagonal bi-pyramidal structure of bond angles 90° and 72°

When lone pairs of electrons are present there will be a deviation from the ideal structure, as the repulsion between lone pairs of electrons are more than that of bond pairs.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Molecule BF3 (B: 1s^2 2s^2 2p^1; F: 1s^2 2s^2 2p^5) (a) Use Orbital Hybridization theory to determine the molecular shape of BF3 molecules; (b) Use Valence Bond theory to determine the electronic structure of NH3 molecules (N: 1s^2 2s^2 2p^3; H: 1s^1); (c) Explain how BF3 molecules react with NH3 molecules.

Explain the origin of each of the molecular orbitals in SF6 by using linear combinations of atomic orbitals.

Give an example of a molecule containing both aσ- and a π-bond and indicate the two types ofbonds in your molecule.