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Group 2 chemistry

Periodicity and main group chemistry · Lesson 2 of 5

Lesson 2 of 5

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Lesson 2 of 5 · Periodicity and main group chemistry

Group 2 chemistry

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Describe and explain the increasing reactivity of Group 2 metals down the group in terms of atomic radius, shielding and decreasing first and second ionisation energies.
Write equations for and explain the reactions of Group 2 metals with water and oxygen, and state the products formed with steam or air where relevant.
Describe the properties and uses of Group 2 oxides and hydroxides, including the trend in hydroxide solubility and alkalinity down the group.

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Describe and explain the trend in solubility of Group 2 sulfates and the limited solubility trend of hydroxides, and apply these trends to compounds such as barium sulfate in medical imaging.

Interpret practical observations and test results involving Group 2 compounds, including precipitation reactions, flame colours where specified by a board, and the use of limewater or other alkaline Group 2 compounds in analysis or industry.

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