Group 7 - the halogens

Question 1

Describe and explain the reactivity of group 7 as you move down?

Answer 1

The further down group 7, the less reactive the atom becomes because the outer shell is further away to the pull of the positive nucleus therefore its harder to gain an electron

Question 2

Group 7 are ____?

Answer 2

Diatomic

Question 3

What does the halogens need to do to get a full , stable outer shell?

Answer 3

Gain an electron

Question 4

What is fluorine?

Answer 4

Fluorine is a very reactive , poisonous yellow gas

Question 5

What is chlorine?

Answer 5

Chlorine is a fairly reactive , poisonous dense green gas

Question 6

What is bromine?

Answer 6

Bromine is a dense , poisonous , red-brown volatile liquid

Question 7

What is iodine ?

Answer 7

Iodine is a very dark grey crystalline solid or a purple vapour

Question 8

As you go down group 7 , the halogens have … what?

Answer 8

Have higher melting and boiling points
Have higher relative atomic masses

Question 9

When halogens form 1- ions, what are they called ?

Answer 9

Halides