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Color of cu+2 in solution
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Blue/ green
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Color of cr+2 in solution
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Blue
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Color of cr+3 in solution
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Green/violet
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Color of Mn+2 in solution
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Light pink
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Color of ni+2 in solution
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Green
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Color of co+2 in solution
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Pink
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Color of mno4- in solution
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Dark purple
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Color of cro4-2 in solution
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Yellow
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Color of cr2h7 -2 in solution
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Orange
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