Chemistry · May / June 2026 · Paper 12 · Question 21

Four statements about the elements in Group I of the Periodic Table are listed. 1 Potassium has a higher density than lithium. 2 Sodium has a higher melting point than lithium. 3 Lithium has more occupied electron shells than sodium. 4 Potassium is more reactive than sodium with water. Which statements are correct?

1. A1 and 3
2. B1 and 4
3. C2 and 3
4. D2 and 4

As printed in the paper