Which formula represents a nonpolar molecule?

(1) HCl (3) NH3

(2) H2O (4) CF4

Answer=4

The molecule is CF4 is the only non polar molecule from the options above. To find if a molecule is polar or non polar, you'd have to draw them (or at least visualize the shape in your head).

1. HCl is linear (with a positive and a negative side, therefore polar)

2. NH3 is trigonal pyramidal (polar)

3. H2O is bent/angular (polar)

4. CF4 is square planar (non polar)

A nonpolar covalent bond is when electrons are shared equally between atoms.

Final answer: CF4 is a non polar molecule