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2.2.2 shape of molecule

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

Shape of molecules and ions depend on

Back (Answer)

Total number of electron pairs around the central atom

#2
Front (Question)

2 types of electron pairs

Back (Answer)

Bonding pairs (e.g. e-s in a covalent bond) Non-bonding pairs (e.g. lone pairs)

#3
Front (Question)

Repel

Back (Answer)

Electron pairs repel as far as possible Lone pairs repel more than bonding pairs

#4
Front (Question)

Bonding pairs

Back (Answer)

Pair of electrons involved in bonding These electrons repel each other equally

#5
Front (Question)

Lone pairs

Back (Answer)

Pairs of electrons that are not involved in bonding Lone pairs repel each other more than bonding pairs Each lone pair reduces the bond angle by 2.5

#6
Front (Question)

Electron pair repulsion theory

Back (Answer)

Shape of a molecule is determined by the number of bonding pairs and lone pairs in the outer shell surrounding the central atom As electrons are negatively charged, each electron pair repels other electron pairs Electron pairs arrange themselves so that they are as far apart as possible Lone pairs repel more than bonding pairs

#7
Front (Question)

Molecules adopt the shape

Back (Answer)

That has the lowest energy

#8
Front (Question)

Predicting the shapes of molecules

Back (Answer)

If you know how many pairs of electrons there are in the outer shell of the central atom, you can predict the shape of the molecule VSEPR

#9
Front (Question)

Drawing 3D molecules

Back (Answer)

Normal line is the bond in the plane of the paper Dotted wedge is the bond going into the paper away from you Bold wedge is the bond coming out of the paper towards you

#10
Front (Question)

2 electron pairs

Back (Answer)

Linear, 2 bonding pairs, 0 lone pairs Straight line 180

#11
Front (Question)

3 bonding pairs

Back (Answer)

Trigonal planar 120

#12
Front (Question)

4 electron pairs

Back (Answer)

Tetrahedral (109.5 each)

#13
Front (Question)

3 electron pairs + lone pair

Back (Answer)

Trigonal pyramid/ pyramidal 107

#14
Front (Question)

2 bonding pairs + 2 lone pairs

Back (Answer)

Bent (v-shape) 104.5

#15
Front (Question)

5 electron pairs

Back (Answer)

Trigonal bipyramidal 120 + 90

#16
Front (Question)

6 electron pairs

Back (Answer)

Octahedral 90

#17
Front (Question)

4 bonding pairs + 2 lone pairs

Back (Answer)

Square planar 90

#18
Front (Question)

Linear

Back (Answer)

180 2 bonding pairs. No lone pairs

#19
Front (Question)

Trigonal planar

Back (Answer)

3 bonding pairs 120

#20
Front (Question)

Bent

Back (Answer)

2 BP + 1 LP 117.5

#21
Front (Question)

Tetrahedral

Back (Answer)

4 BP 109.5

#22
Front (Question)

Pyramidal

Back (Answer)

3 BP + 1 LP 107

#23
Front (Question)

Bent (v-shape)

Back (Answer)

2 BP + 2 LP 104.5

#24
Front (Question)

Trigonal bipyramidal

Back (Answer)

5 BP 120 + 90