2.2 Group 2

Question 1

What is the trend in ionisation energy in group 2?

Answer 1

It decreases down the group
Electron shielding increases
And atomic radii increases

Question 2

What are the trends in the reactivity in the group 2?

Answer 2

It increases down the group
As reactivity energy is the same as ionisation energy
Ionisation energy decreases down the group
The compounds are more likely to form

Question 3

What are the trends are melting point in group 2?

Answer 3

It decreases down the group
As atomic size increases
The attraction between atoms Decrease
The strength of the bond decreases so less energy is needed

MG slightly lower than the trend due to its crystal structure

Question 4

What are the trends in solubility of group 2 hydroxides?

Answer 4

They are more soluble down the group

Question 5

What is the trends in the solubility of group 2 sulphates?

Answer 5

They are less soluble down the group

Question 6

Metal + Water

Steam

Answer 6

Metal Oxide and Hydrogen

Question 7

Metal + water

Answer 7

Metal Hydroxide and Hydrogen

Question 8

Mg(OH)2

Answer 8

Milk of Magnesia

Stomach Acid remedy

Question 9

Ca(OH)2

Answer 9

Slaked lime

Neutralise soil acidity

Question 10

Mg(SO)4

Answer 10

Epsom Salts

Mild laxative

Question 11

Ba(SO)4

Answer 11

Barium Meal

XRay imaging