Group 2

Question 1

What happens to ionisation energy down group 2

Answer 1

It decreases due to:
Increased atomic radius
Increased sheilding

Question 2

What happens to melting points down group 2

Answer 2

Decreases however, Magnesium has an anomalously low melting point due to its different crystal structure

Question 3

How do group 2 metals react with water

Answer 3

They react with water to form metal hydroxides
Mg + H2O > Mg(OH)2 + H2

Question 4

What happens to reactivity down group 2

Answer 4

It increases due to the fact that the ionisation energy decreases

Beryllium is an exception as if it were to lose 2 electrons it would have a very high charge density making it unstable therefore it wont react with water

Question 5

What happens to solubility of hydroxides down group 2

Answer 5

Solubility of hydroxides increases as you go down group 2

Question 6

What happens to solubility of sulphates down group 2

Answer 6

Decreases

Question 7

Uses of metal sulfates in healthcare?

Answer 7

Since X-rays aren’t very good at detecting soft material

Barium meals made of barium sulfate is used to coat the oesophagus, intestines and stomach to make the structure show on xray
Barium sulfates is also insoluble making them useful

Question 8

Uses of metal hydroxide

Answer 8

Calcium hydroxide and magnesium hydroxide used to neutralise acids