Group 2

Question 1

What happens to the size of electrons going down the group

Answer 1

The atoms get bigger going down the group the atomic radio increase as more electrons shells are filled compared to the one above

Question 2

Why happens to the melting point going down a group

Answer 2

It increases as the positive ions is far away from the sea of delocalised electrons do strength of metallic bond decreases except for magnesium

Question 3

How does group 2 metals react with water

Answer 3

Forms metal hydroxide and hydrogen

Question 4

How does magnesium react with steam

Answer 4

To form magnesium oxide and hydrogen

Question 5

What is the solubility like going down the group

Answer 5

Becomes more soluble going down reCting with excess Noah white precipitate of magnesium is forms and white precipitate of calcium hydroxide only and not strontium or barium

Question 6

What is the solubility of metal sulphites going down the group

Answer 6

They become less soluble going down the group which barium sulphate insoluble

Question 7

How to test solubility of metal hydroxide

Answer 7

And metalionoc compound and sodium hydroxide and repeat with different metals

Question 8

How to

Test solubility of metal sulphites

Answer 8

Add drops of ionic compound and add some sulfuric acid and record the solubility of the precipitate formed