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What colour is Sc 3+?
Colourless
What colour is Ti +2?
Violet
What colour is Ti +3?
Purple
What colour is Ti +4?
Colourless
What colour is V +2?
Violet
What colour is V +3
Green
What colour is V +4?
Blue
What colour is V +5?
Yellow
What colour is Cr +2?
Blue
What colour is Cr +3?
Green
What colour is Cr +6?
Orange/yellow
What colour is Mn +2?
Pink
What colour is Mn +4?
Brown
What colour is Mn +6?
Green
What colour is Mn +7?
Purple
What colour is Fe +2?
green
What colour is Fe +3?
Brown
What colour is Co +2?
Pink
What colour is Co +3?
Yellow
What colour is Ni +2?
Green
What colour is Cu +1?
Colourless
What colour is Cu +2?
Blue
What colour is Zi +2?
Colourless