What is the colour of: CoCo3?
Pink
What is the colour of: [Co(H2O)6]^2+?
Pink
What is the colour of: CoCl4^2-?
Blue
What is the colour of: Co(OH)2?
Blue
What is the colour of: [Co(NH3)6]^2+?
Light brown
What is the colour of: [Co(NH3)6]^3+?
Dark brown
What is the colour of: [Cu(H2O)6]^2+?
Blue
What is the colour of: Cu(OH)2?
Blue
What is the colour of: CuCO3?
Green
What is the colour of: CuCl4^2-?
Yellow-green
What is the colour of: [Fe(H2O)6]^2+?
Green
What is the colour of Fe(OH)2?
Green
What is the colour of: [Al(H2O)6]^3+?
Colourless
What is the colour of: Al(OH)3?
White
What is the colour of: Al(OH)4^-?
Colourless