Transition Metals Colour compounds

Question 1

What is the colour and oxidation number of Fe2+

Answer 1

Green, +2

Question 2

What is the colour and oxidation number of Fe(OH)2

Answer 2

Green Precipitate, +2

Question 3

What is the colour and oxidation number of Fe3+

Answer 3

Yellow, +3

Question 4

What is the colour and oxidation number of Fe(OH)3

Answer 4

Orange-brown Precipitate, +3

Question 5

What is the colour and oxidation number of Cu

Answer 5

Brown solid, 0

Question 6

What is the colour and oxidation number of Cu+

Answer 6

Colourless, +1

Question 7

What is the colour and oxidation number of CuI

Answer 7

White Precipitate, +1

Question 8

What is the colour and oxidation number of Cu2+

Answer 8

Pale Blue, +2

Question 9

What is the colour and oxidation number of [Cu(NH3)4(H2O2]2+

Answer 9

Deep Blue, +2

Question 10

What is the colour and oxidation number of Cu(OH)2

Answer 10

Pale Blue Precipitate, +2

Question 11

What is the colour and oxidation number of [CuCl4]2-

Answer 11

Yellow, +2

Question 12

What is the colour and oxidation number of Cr3+

Answer 12

Violet, +3

Question 13

What is the colour and oxidation number of [Cr(NH3)6]3+

Answer 13

Purple, +3

Question 14

What is the colour and oxidation number of Cr(OH)3

Answer 14

Green Precipitate, +3

Question 15

What is the colour and oxidation number of [Cr(OH)6]3-

Answer 15

Green, +3

Question 16

What is the colour and oxidation number of Cr2O72-

Answer 16

Orange, +6

Question 17

What is the colour and oxidation number of CrO42-

Answer 17

Yellow, +6

Question 18

What is the colour and oxidation number of Mn2+

Answer 18

Pale Pink, +2

Question 19

What is the colour and oxidation number of Mn(OH)2

Answer 19

Light Brown Precipitate, +2

Question 20

What is the colour and oxidation number of MnO4-

Answer 20

Purple, +7