Question

${\left[Cu{\left(H_{2}O\right)}_4\right]}^{2+}$ absorbs orange light and the transmitted complementary colour will be :

• A. Green
• B. Yellow
• C. Blue
• D. Violet

Answer 1

The correct option is C Blue

Orange and blue are complementary colors. Thus, an object has a particular color for one of two reasons: (1) It reflects or transmits light of that color; (2) It absorbs light of the complementary color.

${\left[Cu{\left(H_{2}O\right)}_4\right]}^{2+}$ absorbs orange light and the transmitted complementary colour will be blue.

hence, option (C) is correct.