Group 7 - Halogens

Question 1

Properties of Halogens:

Answer 1

They have seven electrons on their outer shell.
They are Non-metals.
They exist as diatomic molecules in the form of toxic colored vapors

Question 2

Name the 5 Group 7 metals:

Answer 2

Fluorine
Chlorine
Bromine
Iodine
Astatine

Question 3

Reactivity:

Answer 3

As you go down the group, the reactivity decreases because Group 7 elements gain one electron on their outer shell.
As you move down the group, there is an increased distance between the nucleus and the outer electron shells making it more difficult for the electron to be gained.

Question 4

Melting and boiling point:

Answer 4

As you go down the group, the melting and boiling point increases.

Question 5

Relative Atomic Mass:

Answer 5

Increases as you go down the group