5.1.2.6 group 7

Question 1

What are the group 7 elements known as?

Answer 1

The halogens

Question 2

Is the reactivity higher or lower as you go down group 7?

Answer 2

The reactivity is lower

Question 3

Why does the reactivity decrease as you go down group 7?

Answer 3

As you go down the group, the reactivity decreases. Fluorine is the most reactive and iodine is less reactive. The attractions from the nucleus to the outer shell is weaker as you go down the group. It is therefore difficult to gain an electron in the outer shell to fill it up.

Question 4

A _____ reactive halogen will displace a ____ reactive halogen

Answer 4

More, less

Question 5

What are the elements in group 7 from top to bottom?

Answer 5

Fluorine
Chlorine
Bromine
Iodine
Astatine
Tennessine

Question 6

How many electrons are there in the outer shell within elements in group 7

Answer 6

7

Question 7

Are halogens non metal or metals?

Answer 7

Non metals

Question 8

The further down the group the higher it’s…

Answer 8

Relative molecular mass, melting and boiling points

Question 9

A more reactive halogen can displace a less..

Answer 9

Reactive halogen from an aqueous solution of its salt