Non metal reactivity trends (TOPIC 12)

Question 1

Colour and state at room temp of Bromine

Answer 1

Red/brown Liquid

Gives off orange vapour at room temperature

Question 2

Colour and state at room temp of Chlorine

Answer 2

Green
Gas

Question 3

Colour and state at room temp of Iodine

Answer 3

Dark grey crystalline solid

Gives off purple vapour when heated

Question 4

What is the trend in reactivity in Halogens?

Answer 4

More reactive higher up the group

Question 5

What is the trend in colour and boiling point in Halogens?

Answer 5

Darker and higher boiling point further down the group.

Question 6

Why does reactivity decrease in Halogens when going down the group?

Answer 6

More shielding
Outer shell is further away from the nucleus which there is less attraction between outer electron and nucleus - harder to attract the extra electron to fill the outer shell

Question 7

What is the rule in the displacement of halogens?

Answer 7

Most reactive halogen displaces less reactive halide.

Question 8

Are all halogens diatomic molecules?

Answer 8

YES