Other slides in this set

Slide 2

Preview of page 2

Here's a taster:

SHAPES OF MOLECULES & IONS
The shape of a molecule/ion depends on the
number of electron pairs in the outer shell of
the central atom.
Electron pairs repel each other and try to
get as far apart as possible.
Species containing only bonding pairs of
electrons have regular shapes.
This is because bonding pairs of electrons
exert equal repulsion on each other.…read more

Slide 3

Preview of page 3

Here's a taster:

REGULAR SHAPES
Number of
Arrangement Angles Name of shape
electron pairs
2 Linear
Trigonal
3 Planar
109.5°
4 Tetrahedra
l…read more

Slide 4

Preview of page 4

Here's a taster:

REGULAR SHAPES
Number of
Arrangement Angles Name of shape
electron pairs
Trigonal
5
Bipyramidal
6 Octahedral…read more

Slide 5

Preview of page 5

Here's a taster:

SHAPES OF MOLECULES
The shape of a molecule/ion ALSO
depends
on the presence of non-bonding electron
pairs (lone pairs).
Lone pairs take up more space (because they
are held closer to the nucleus) so repel more
strongly than bonding pairs…read more

Slide 6

Preview of page 6

Here's a taster:

Examples:
i) CH4
ii) NH3
iii) H2O…read more

Slide 7

Preview of page 7
Preview of page 7

Slide 8

Preview of page 8
Preview of page 8

Slide 9

Preview of page 9
Preview of page 9

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »