Chemistry 9701 · AS & A Level · The Periodic Table: chemical periodicity

The Periodic Table: chemical periodicity — practice question

Sir Humphrey Davy identified boron, calcium, magnesium and sodium. Which of these elements has the second smallest atomic radius in its group and the third lowest first ionisation energy in its period?

Aboron
Bcalcium
Cmagnesium
Dsodium

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

Full mark scheme, point by point
Step-by-step worked solution
Write your answer & get it marked instantly by AI