Group 7

Question 1

What are the properties of the group 7 elements?

Answer 1

Fluorine-is a very reactive poisonous yellow gas.
Chlorine-is a very reactive poisonous green gas.
Bromine-is a dense,poisonous,red-brown volatile liquid
Iodine-is a dark grey crystalline solid or a purple vapor.
they all exist in diatomic molecules.

Question 2

What are the trends in group 7 elements?

Answer 2

1. Become less reactive as you go down the group
2. Have higher melting and boiling points
3. Have higher relative atomic masses.

Question 3

What do halogens form ionic bonds with what other group?

Answer 3

Group 1

Question 4

What is a displacement reaction?

Answer 4

Where are more reactive halogen replaces another one in a reaction.