Shape Of Nh4 Simple Chemistry Questions About The Shapes Of Molecules! PLEASE HELP!?

Simple chemistry questions about the shapes of molecules! PLEASE HELP!? - shape of nh4

Can someone help me with these questions:

Are these molecules polar or?
NH4 +
CCl4
SIF6 2 --
SF5 --

Identify the hybridization according to the form of:
NH4 +
CCl4
SIF6 2 --
SF5 --

Identify, will be where the distortion of regular geometric angles, the presence of one or more pairs of electrons:
NH4 +
CCl4
SIF6 2 --
SF5 --

In addition to those who they should be linear and expect to believe V?
BRF2 +
BRF2 --
CN2 2 --