simple chemistry question?

Question

Fluorine and Chlorine are gases, Bromine is a liquid, and Iodine is a solid.
Which of the following statements are true about these elements?

1. All of the molecutes are diatomic.
2. All of the molecules are non-polar.
3. The intermolcular forces increase as you move down the family because of larger electron clouds producing induced dipoles.
4. The intermolecular forces increase as your move down the family because of increased shielding.

(Note)Can be any combination of the choices above.

Answer 1

The first three are true and the last is false.
1) All the molecules of the halides are diatomic in their free state during a chemical reaction.

2) Since all the diatomic halides involve bonding to an identical atom, the electronegativity difference between the two atoms is zero. This means they share the electrons equally and form a NONpolar covalent bond.

3) This is true because as you go down the group you are adding more and more levels of electrons around the nucleus. The more electrons added, the more they can interact and form induced dipoles.

4) This is false. Shielding should actually cause a lower attraction between the nucleus and the electrons of that atom or ion. It would not enter into causing a stronger attraction toward other atoms or ions of its kind.

Answer 2

4 is False. The others are true.

Answer 3

First two true; second two false.