MEDIUM
AS and A Level
IMPORTANT
Earn 100
By looking at the elements in Period 2 of the Periodic Table and using your knowledge of Period 3 elements, predict and explain the relative sizes of the atomic radii of lithium and fluorine.
Important Questions on Periodicity
MEDIUM
AS and A Level
IMPORTANT
By looking at the elements in Period 2 of the Periodic Table and using your knowledge of Period 3 elements, predict and explain the relative sizes of a lithium atom and its ion, .
EASY
AS and A Level
IMPORTANT
By looking at the elements in Period 2 of the Periodic Table and using your knowledge of Period 3 elements, predict and explain the relative sizes of an oxygen atom and its ion, .
MEDIUM
AS and A Level
IMPORTANT
By looking at the elements in Period 2 of the Periodic Table and using your knowledge of Period 3 elements, predict and explain the relative sizes of a nitride ion , and a fluoride ion, .
MEDIUM
AS and A Level
IMPORTANT
Why does sulphur have a lower melting point than silicon?
MEDIUM
AS and A Level
IMPORTANT
Why does sulphur have a higher melting point than chlorine?
MEDIUM
AS and A Level
IMPORTANT
What is the general trend in first ionisation energies across Period 3?
MEDIUM
AS and A Level
IMPORTANT
Explain why aluminium has a lower first ionisation energy than magnesium.
MEDIUM
AS and A Level
IMPORTANT
Explain why sulphur has a lower first ionisation energy than phosphorus.
