Group II

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Group 2 atomic radii...
Decrease going down the group.
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Group 2 IE...
Decreases going down the group due to having an extra electron shell so electrons are further away.
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Reactivity...
Increases going down the group it becomes easier to lose electrons so reactivity increases.
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Melting points...
Decreases going down the group due to the number of delocalised electrons remaining the same but the ions getting bigger and having a small charge ratio - more spread apart.
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Testing for sulfate ions?
Add Barium chloride and if a sulfate compound is present it will precipitate Barium Sulfate.
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Hydroxide and Sulfate solubilty?
Hydroxide - increase Sulfate - decrease
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Where is Calcium hydroxide used?
In agriculture - slaked lime to neutralise
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What Magnesium hydroxide used for?
In antacid tablets to neutralise them.
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What about Barium sulfate?
Barium meals for x-rays because it is insoluble so coats the tissues.
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Other cards in this set

Card 2

Front

Group 2 IE...

Back

Decreases going down the group due to having an extra electron shell so electrons are further away.

Card 3

Front

Reactivity...

Back

Preview of the front of card 3

Card 4

Front

Melting points...

Back

Preview of the front of card 4

Card 5

Front

Testing for sulfate ions?

Back

Preview of the front of card 5
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