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.

${\mathrm{NF}}_3$

For the following formula work out the IUPAC name.

${\mathrm{N}}_2{\mathrm{O}}_4$

For the following formula work out the IUPAC name.

${\mathrm{Cl}}_2{\mathrm{O}}_5$

For the following formula work out the IUPAC name.

${\mathrm{PCl}}_3$

For the following formula work out the IUPAC name.

${\mathrm{H}}_2{\mathrm{O}}_2$