The approximate values for the indicated bond angles have to be given. Concept Introduction: Bond angle is the angle between two bonds of a molecule and it is determined based on the electron-domain geometry. T y p e o f m o l e c u l e H y b r i d a i z a t i o n G e o m e t r y B o n d a n g l e A X 2 s p L i n e a r 180 ° A X 3 , A X 2 B s p 2 T r i g o n a l p l a n a r 120 ° A X 4 , A X 3 B , A X 2 B 2 s p 3 T e t r a h e d r a l 109.5 ° A X 5 , A X 4 B , A X 3 B 2 , A X 2 B 3 s p 3 d T r i g o n a l b i p y r a m i d a l 120 ° , 90 ° A X 6 , A X 5 B , A X 4 B 2 s p 3 d 2 O c t a h e d r a l 90 ° A → C e n t r a l a t o m X → A t o m s b o n d e d t o A B → N o n b o n d i n g e l e c t r o n p a i r s o n A .

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Chapter 7, Problem 68QRT

(a)

Interpretation Introduction

Interpretation:

The approximate values for the indicated bond angles have to be given.

Concept Introduction:

Bond angle is the angle between two bonds of a molecule and it is determined based on the electron-domain geometry.

Type of moleculeHybridaizationGeometryBond angleAX2spLinear180°AX3,AX2Bsp2Trigonal planar120°AX4,AX3B,AX2B2sp3Tetrahedral109.5°AX5,AX4B,AX3B2,AX2B3sp3dTrigonal bipyramidal120°,90°AX6,AX5B,AX4B2sp3d2Octahedral90°A → Central atomX → Atoms bonded to AB → Non bonding electron pairs on A.

(b)

Interpretation Introduction

Interpretation:

The most polar bond in the molecule has to be given.

Concept Introduction:

The unequal distribution of shared electrons caused by differences in electronegativity between bonded atoms is called bond polarity.

Dipole moment: It is the measure of the charge separation that is describes the polar in the bond between the two atoms.

Electronegativity: It is defined as the capacity of the atom to abstract the pair of electrons towards itself results to have high negative charge.

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