Edexcel A-level chemistry group 2 trends (topic 4A)

Which hydroxide is most soluble in water?

• Mg(OH)₂

• Ba(OH)₂

• Ca(OH)₂

• Sr(OH)₂

Reorder the following from SMALLEST to LARGEST atomic radius

• Sr

• Ba

• Be

• Mg

• Ca

Which has the highest first ionisation energy?

• Mg

• Sr

• Ca

• Be

Which has the lowest first ionisation energy?

• Mg

• Be

• Sr

• Ca

• water

• an acid

• steam

• an alkali

Which hydroxide is least soluble in water?

• Mg(OH)₂

• Ba(OH)₂

• Ca(OH)₂

• Sr(OH)₂

Reorder the following from SMALLEST to LARGEST atomic radius

• Sr

• Mg

• Ba

• Be

• Ca

Which is the BEST explanation for the increasing atomic radius of group 2 elements down the group?

• nuclear charge increases

• shielding increases

• electrons are in higher energy levels

• nuclear charge decreases

Which will react most vigorously with water?

• Ca

• Mg

• Sr

• Ba

When an oxide ion reacts with water, what is formed?

• oxygen + hydrogen

• hydrogen ions + oxygen

• hydrogen ions + hydroxide ions

• hydroxide ions