Group 2

Question 1

What are the characteristic of group 2 metals

Answer 1

the alkaline metals are reactive and do not occur in their elemental state naturally

Question 2

what are their properties in terms of redox

Answer 2

Reducing agents
They become oxidised as they tend to lose their outermost e-

Question 3

group 2 reactions with oxygen

Answer 3

All group 2 elemnents react with 02 to for metal oxides
They are oxidised by OXYGEN

Question 4

Group 2 reactions with water

Answer 4

They react to from an alkaline hydroxide with the general formula X(OH)2
They are again oxidised by the water

eg:
SR + 2H20 → Sr(OH)2 + H2

Question 5

Group 2 reactions with dilute acids

Answer 5

they are oxidise by the acid
eg:
Mg + 2HCl → Mg Cl2 + H2

Question 6

Trend in reactivity energy in group 2

Answer 6

reactivity increases as you go down group 2

Question 7

trend in ionisation energy in group 2

Answer 7

decrease down the group due to increased atomic radius and e- shielding

Question 8

Reaction of group 2 oxides

Answer 8

the oxides react with water to form a 2+ ion and an OH- ion

Question 9

Trend in solubility of group 2 hydroxides as you go down the group

Answer 9

increases as you go down the group

this can be easily seen by add each oxide to water and shake. As you go down the group less solid will be remaining

Question 10

Uses of group 2 compounds basic properties

Answer 10

It is added as lime (ca(OH)2 to fields to increase soil pH
This is the white poweder in fields

Commonly used as antacids to neutralise indigestion and stomach issues