Barium is often stored under oil to prevent it reacting with water vapour or oxygen in the air.All the metals react slowly with oxygen in the air. For a more vigorous reaction the elements need to be heated.The reaction becomes more vigorous down the group.The general equation for the reaction is:2 M (s) + O2 (g) → 2 MO (s)
Reactions with Oxygen
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Specification: Edexcel Chemistry (8CH0), AS-level, Topic 4A: The elements of Groups 1 and 2. Topic: Group 2.
More in Group 2
- Group 2 Elements
- Trend In Ionisation Energy
- Trend in Reactivity
- Reactions with Chlorine
- Reactions with Water
- Magnesium and Steam
- Reactions of Oxides with Water
- Trends in Solubility of the Hydroxides
All 16 lessons in Group 2 · All Edexcel AS-level Chemistry topics