Group 2

Question 1

Give the trend in atomic radius down group 2

Answer 1

increases

as extra shells of electrons shield the nuclear charge from the outer electrons and they move further away

Question 2

Give the trend in 1st ionisation energies down group 2

Answer 2

decreases

as successive electron shells shield the nuclear charge and it becomes easier to remove an electron

Question 3

Give the trend in melting points down group 2

Answer 3

generally decreases as metallic bonds become weaker

Question 4

What is Magnesium used for in the Kroll process

Answer 4

reduce titanium(IV) chloride

Question 5

Trend in solubility down a group 2 hydroxides

Answer 5

decreases

Question 6

What is magnesium hydroxide used in medicine for

Answer 6

to neutralise stomach acid

Question 7

What is calcium hydroxide used for in agriculture

Answer 7

neutralise soil acidity

Question 8

What is the trend in group 2 sulfates down the group

Answer 8

decreases

Question 9

What is barium sulfate used in barium metals for

Answer 9

to X-ray the digestive system

Question 10

What is acidified barium chloride solution used to identity

Answer 10

sulfate ions

a white precipitate of barium sulfate forms

Question 11

What is used to remove sulfur dioxide from flue gases

Answer 11

calcium oxide and calcium carbonate