Chapter 6: Shapes of molecules and intermolecular forces

Question 1

Electronegativity

Answer 1

A measure of attraction of a bonded atom for the pair of electrons in a covalent bond

Question 2

Trend of electronegativity across the periodic table

Answer 2

Nuclear charge increases

Atomic radius increases

Question 3

A non-polar bond

Answer 3

The bonded electron is shared equally between the bonded atoms
(This bond forms when the bonded atoms are the same or have similar electronegativity)

Question 4

Polar bonds

Answer 4

The bonded electron pair is shared unequally between the bonded atoms

Question 5

Dipole

Answer 5

Separation of opposite charges-

Question 6

Intermolecular forces

Answer 6

Are weak interactions between dipoles of different molecules

Question 7

London forces

Answer 7

Are weak intermolecular forces that exist between all molecules
An instantaneous dipole is induced

Question 8

Permanent dipole -dipole interactions

Answer 8

Act between the permanent dipole in different polar molecules

Question 9

Simple molecular substance?

Answer 9

Is made up of simple molecules which are held by weak intermolecular forces

Question 10

Hydrogen bonds

Answer 10

A special tour of permanent dipole-dipole interaction found between molecules

Question 11

Two bonding pairs

Answer 11

Linear

180

Question 12

Three bonding pairs

Answer 12

Trigonal planar

120

Question 13

Four bonding pairs

Answer 13

Tetrahedral

109.5

Question 14

Five bonding pairs

Answer 14

Trigonal bipyramadial

90/120

Question 15

Six bonding pairs

Answer 15

Octahedral

90

Question 16

Three bonding pairs

One lone pair

Answer 16

Pyramidal

107

Question 17

Two bonding pairs

Two lone pairs

Answer 17

Non linear v-shaped bent

104.5