group 2 Flashcards by elsa c

Q

Reactivity trend down Group 2?

A

Increases — outer electrons more easily lost.

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Q

Ionisation energy trend?

A

Decreases — more shielding, larger atomic radius.

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Q

Group 2 oxides + water → ?

A

Metal hydroxides

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Q

Hydroxide solubility down Group 2?

A

Increases

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Q

Sulfate solubility down Group 2?

A

Decreases

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Q

Barium sulfate test for sulfates?

A

Add HCl then BaCl₂ — white precipitate = sulfate

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Q

Uses: Mg(OH)₂? Ca(OH)₂?

A

Antacid; neutralise soil acidity

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