Halogens

Question 1

Define halogens

Answer 1

The group 7 elements of the periodic table
Salt former
Diatomic particles
Easy to make full shell as they have 7 valence electrons
Halide ions - negative ions

Question 2

Define the physical properties of halogens

Answer 2

Non-metals
Don’t conduct electricity
Melting point increases down the group
Density increases down the group
Colour of elements gets darker down the group

Question 3

What happens to the reactivity as one goes down the halogen group?

Answer 3

The reactivity decreases
More reactive halogen can displace a less reactive halide ion