C4.1.2 Group 7

Question 1

Name all the elements in Group 7

Answer 1

Fluorine,Chlorine,Bromine,Iodine,Astaine

Question 2

Does density increase or decrease as you go down group 7?

Answer 2

Density increases as you go down the group

Question 3

Explain the reactivity pattern in Group 7

Answer 3

As you go down the group, the reactivity decreases. This is because as you go down Group 7, the atoms get bigger and the distance between the nucleus and outer electron is greater. This reduces the force of attraction making it harder to gain an electron.

Question 4

What form does chlorine exist as at room temperature?

Answer 4

It exists as a pale green gas

Question 5

What form does fluorine exist as at room temperature

Answer 5

As a pale yellow gas

Question 6

What form is bromine in at room temperature?

Answer 6

A orange-brown liquid

Question 7

What form does iodine exist in at room temperature?

Answer 7

Black solid with a purple vapour