MEDIUM
AS and A Level
IMPORTANT
Earn 100

i) Describe how the atomic radius varies across Periods 2 and 3. 
ii) Explain this trend. 

Important Questions on Periodicity

EASY
AS and A Level
IMPORTANT

(i) Describe how the atomic radius varies down each group of the periodic table.

(ii) Explain this trend.

MEDIUM
AS and A Level
IMPORTANT
Describe the acid-base nature of the solutions obtained when sodium chloride is added to water. Use equations to illustrate your answer. 
MEDIUM
AS and A Level
IMPORTANT
Describe the acid-base nature of the solutions obtained when sulphur trioxide is added to water. Use equations to illustrate your answer.
MEDIUM
AS and A Level
IMPORTANT
Describe the acid-base nature of the solutions obtained when sodium oxide is added to water. Use equations to illustrate your answer.
MEDIUM
AS and A Level
IMPORTANT
Describe the acid-base nature of the solutions obtained when phosphorus(V) chloride is added to water. Use equations to illustrate your answer.
MEDIUM
AS and A Level
IMPORTANT
i) Write an equation for the reaction of magnesium with cold water. 
ii) Predict and explain the pH of the resulting solution.