Describe the shape of molecule.

Methane, ${\mathrm{CH}}_4$

Describe the shape of molecule.

Nitrogen, ${\mathrm{N}}_2$

Describe the shape of molecule.

Carbon dioxide, ${\mathrm{CO}}_2$

Describe the shape of molecule.

Carbon monoxide, $\mathrm{CO}$

Describe the shape of molecule.

Ammonia, ${\mathrm{NH}}_3$

For the following formula work out the IUPAC name.

${\mathrm{BF}}_3$

For the following formula work out the IUPAC name.

${\mathrm{CH}}_4$

For the following formula work out the IUPAC name.

${\mathrm{SO}}_3$

For the following formula work out the IUPAC name.

${\mathrm{NF}}_3$