MODULE 2: Shapes of Molecules and Intermolecular Forces

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Total cards: 24•Content version: v3•Public deck•Updated: 8/1/2026

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Front (Question)

How many degrees does the bond angle in a covalent bond decrease per lone pair of electrons?

Back (Answer)

2.5 degrees

Front (Question)

What is the bond angle in a covalent bond with 4 bonded pairs?

Back (Answer)

109.5 degrees

Front (Question)

What is the bond angle in a covalent bond with 3 bonded pairs and 1 lone pair?

Back (Answer)

107 degrees

Front (Question)

What is the bond angle in a covalent bond with 2 bonded pairs and 2 lone pairs?

Back (Answer)

104.5 degrees

Front (Question)

What is the bond angle in a covalent bond with just 3 bonded pairs and no lone pairs?

Back (Answer)

120 degrees

Front (Question)

What is the bond angle in a covalent bond with 6 bonded pairs and no lone pairs?

Back (Answer)

90 degrees

Front (Question)

What is the name of a covalent bond with 4 bonded pairs?

Back (Answer)

Tetrahedral

Front (Question)

What is the name of a covalent bond with 3 bonded pairs and 1 lone pairs?

Back (Answer)

Trigonal pyramidal

Front (Question)

What is the name of a covalent bond with 2 bonded pairs and 2 lone pairs?

Back (Answer)

Non-linear (because they’re bent!)

#10

Front (Question)

What is the name of a covalent bond with 3 bonded pairs and no lone pairs?

Back (Answer)

Trigonal planar

#11

Front (Question)

What is the name of a covalent bond with 6 bonded pairs and no lone pairs?

Back (Answer)

Octahedral

#12

Front (Question)

Why do lone pairs cause more repulsion?

Back (Answer)

Because they are not shared, therefore have a more concentrated negative charge

#13

Front (Question)

When drawing 3D molecules, what does a solid line represent?

Back (Answer)

A bond on the same plane as the paper

#14

Front (Question)

When drawing 3D molecules, what does a solid wedge represent?

Back (Answer)

A bond that comes forward from the plane of the paper (towards you)

#15

Front (Question)

When drawing 3D molecules, what does a dotted wedge represent?

Back (Answer)

A bond that goes away from the plane of the paper (away from you)

#16

Front (Question)

What is electronegativity?

Back (Answer)

The ability of an atom in a covalent bond to attract the bonded pair of electrons

#17

Front (Question)

How does electronegativity increase across the periodic table?

Back (Answer)

Up and to the right (towards fluorine)

#18

Front (Question)

How is electronegativity measured?

Back (Answer)

Pauling electronegativity scale (0.0-4.0)

#19

Front (Question)

What is a polar bond?

Back (Answer)

A bond where the shared pair of electrons is unequally distributed as the atoms sharing the bonds have different electronegativity values

#20

Front (Question)

What is a non-polar bond?

Back (Answer)

A bond where the shared pair of electrons is shared equally between atoms

#21

Front (Question)

What happens to the atoms with a polar bond?

Back (Answer)

They gain partial charges

#22

Front (Question)

What symbol is used to represent partial charges?

Back (Answer)

Delta (δ)

#23

Front (Question)

What are the partial charges in a polar bond called?

Back (Answer)

Permanent dipoles

#24

Front (Question)

What are the different types of intermolecular forces?

Back (Answer)

London forces, permanent dipole-dipole interactions, hydrogen bonding