CHEM- Colors of Metal Ions and Transition Metals

Chemistry, Colors of Metal Ions, Transition Metals - DSE | IGCE Chemistry

May 7, 2018

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I- Colors of metal ions from Group 1, 2 and 3

II- Colors of transition metals

Part I- Metal Ions

Fe²⁺⇒ Pale green

Fe³⁺⇒ Yellow-brown

Cu²⁺⇒ Blue

Cr³⁺ ⇒ Green

Ni²⁺ ⇒ Green

Mn²⁺ ⇒ Pale-pink/Colorless

Zn²⁺ ⇒ Colorless

Part II- Transition Metals

Sc³⁺ ⇒ colorless

Ti³⁺⇒ purple

V³⁺ ⇒ green

Colors of Vanadium ions

VO₂⁺ ⇒ Yellow *oxidation state: +5

VO²⁺ ⇒ Blue *oxidation state: +4

V²⁺ ⇒ Violet

Colors of Manganese ions

Mn(OH)₃ ⇒ Brown *oxidation state: +3

MnO₂ ⇒ Black *oxidation state: +4

MnO₄^2- ⇒ Dark green *oxidation state: +6

MnO₄^- ⇒ Purple *oxidation state: +7

Colors of Chromium ions

Cr²⁺ ⇒ Blue

CrO₄^2- ⇒ Yellow *oxidation state: +6

Cr₂O₇^2-⇒ Orange *oxidation state: +6

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