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periodic table - Coggle Diagram
periodic table
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group 7
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Characteristic 1:up is increse reativity because atoms gain electrons but big ones cannot do this well-they react slowes.
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transition metals
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Characterstic:Good conductor of electciclity.
Good conductor of heat.
hard and strong.
high density.
high melting point.
less reaction.
it can used catalysts.