Chapter 4, Problem 6CTQ

a)

Interpretation Introduction

Interpretation: EN difference for $\text{C}-\text{Li}$ bond in ${\text{CH}}_{\text{3}}\text{Li}$ is to be determined. Also, dipole moment arrow for molecule should be determined.

Concept introduction: Atom is said to be electronegative if it has tendency to attract electrons towards itself in a bond. Higher the electronegativity of element, more will be attraction of electrons and vice-versa. Dipole moment is a measure of bond polarity in molecule. It is defined as product of charge and distance of separation between opposite charges. Polar molecules consist of dipole moments due to presence of charges in them whereas non-polar molecules do not have dipole moments.

b)

Interpretation Introduction

Interpretation: Partial positive and partial negative charges to $\text{C}$ and $\text{Li}$ in ${\text{CH}}_{\text{3}}\text{Li}$ should be added.

Concept introduction: Atom is said to be electronegative if it has tendency to attract electrons towards itself in a bond. Higher the electronegativity of element more will be attraction of electrons and vice-versa.

c)

Interpretation Introduction

Interpretation: Difference between $\text{C}$ in ${\text{CH}}_{\text{3}}\text{Li}$ and other carbons in figure 4.5 should be determined.

Concept introduction: Atom is said to be electronegative if it has tendency to attract electrons towards itself in a bond. Higher the electronegativity of element, more will be attraction of electrons and vice-versa.