R W Grime Ripon Grammar School

1
Group 2
R W Grime Ripon Grammar School
2
ATOMIC RADIUS
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1st IONISATION ENERGY
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ELECTRONEGATIVITY
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MELTING POINT
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• NaCl(s) NaCl(aq)

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• Mg(NO3)2(aq) H2SO4(aq)

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• No reaction

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• Ba(NO3)2(aq) H2SO4(aq)

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• Ba2(aq) SO42-(aq) ? BaSO4(s)

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• MgCl2(aq) NaOH(aq)

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• Mg2(aq) 2 OH(aq) ? Mg(OH)2(s)

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• BaCl2(aq) NaOH(aq)

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• No reaction

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Group 2 sulphates
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Group 2 sulphates
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Group 2 sulphates
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Group 2 hydroxides
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Group 2 hydroxides
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Group 2 hydroxides
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more soluble
more soluble

• RememberOpposite trendsCa(OH)2 CaSO4
  sparingly solubleBaSO4 insoluble

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Barium meal BaSO4
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Milk of magnesia Mg(OH)2
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Lime Ca(OH)2