Group 7 Elements

Question 1

What are group 7 Elements also known as ?

Answer 1

Halogens

Question 2

Fluorides properties are…

Answer 2

Very reactive
Poisonous
Produce yellow gas

Question 3

Chlorines properties are…

Answer 3

Fairly reactive
Poisonous
Dense green gas

Question 4

Bromines properties are…

Answer 4

Dense
Poisonous
Red/brown volatile liquid

Question 5

Iodines properties are…

Answer 5

Dark grey
Crystalline solid
Purple vapour

Question 6

What do halogens all exist as ?

Answer 6

Molecules - pair of atoms

Question 7

Group 7 trends as you go down the group are ?

Answer 7

Less reactive as you go down the group because it’s harder to gain an electron because it is further away from the nucleus
Higher melting and boiling points
Higher relative atomic masses

Question 8

How do halogens share electrons ?

Answer 8

Via covalent bonding with other mom-metals to achieve a full outer shell

Question 9

What do ionic ones do halogens form with metals

Answer 9

1- ions called halides

Forming an ionic structure

Question 10

What happens with halogen displacements ?

Answer 10

They displace the less reactive halogen