EASY
AS and A Level
IMPORTANT
Earn 100
Which one of the following electronic configurations correctly describes a calcium ion?
50% studentsanswered this correctly
Important Questions on Group 2
EASY
AS and A Level
IMPORTANT
Write a half equation to show the conversion of a calcium atom into a calcium ion.
EASY
AS and A Level
IMPORTANT
How does the oxidation number of calcium change in the conversion of a calcium atom into calcium ion? Explain whether the calcium has been oxidised or reduced in this change.
EASY
AS and A Level
IMPORTANT
Add up the first two ionisation energies of the Group 2 elements shown in the table below, and record your results in a table.
| Group 2 | First ionisation energy / kJ mol-1 |
Second ionisation energy / kJ mol-1 |
| beryllium (Be) | 900 | 1760 |
| magnesium (Mg) |
736 | 1450 |
| calcium (Ca) | 590 | 1150 |
| strontium (Sr) | 548 | 1060 |
| barium (Ba) | 502 | 966 |
EASY
AS and A Level
IMPORTANT
Draw a sketch graph to show the sum of the first two ionisation energies against the atomic number for the Group 2 elements beryllium to barium. Discuss the trend shown on your graph and how this might affect the reactivity of the Group 2 elements.
| Element | First ionisation energy/ | Second ionisation energy/ |
EASY
AS and A Level
IMPORTANT
Write balanced chemical equation, including state symbols, for the reaction of strontium with oxygen.
EASY
AS and A Level
IMPORTANT
Write balanced chemical equations, including state symbols, for the reaction of strontium with water.
EASY
AS and A Level
IMPORTANT
Write a balanced chemical equation, including state symbols, for the reaction of barium with water.
EASY
AS and A Level
IMPORTANT
Predict the pH of the solution formed on the reaction of barium with water.
