group 2

atomic radio is trend down group

Increases because extra shells

Because atomic radius increases Wah about ionisation energy

Decreases due to shielding and distance increasing

Reactivity

Increases because easy to loose electrons

Melt p

Decreases because atomic radius increase electrons more spread out easier to brake bonds

Group 2 with water

As u go down it reacts quicker

Magnesiiim with water

MgO if steam

MgOH if cold

Solubility of hydroxides

Increase as you go down

Solubility of sulfates

Decrease as u go down

Uses of hydroxides

MgOH = neutralise stomach acid

CaOH= neutralise soil acid

Use of barium

Barium Sulfate meals they’re opaque

Magnesium

Extract titanium form titanium chloride

calcium oxide and calcuum carbonate and water

Spray on sulfur dioxide makes calcium Sulfate