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STD 12 - 5. Co-ordination chemistry — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 5. Co-ordination chemistry4 Marks
MCQ
Wavelength of red light is absorbed by the complex
  • A
    $[Cu(CN)_4]^{2-}$
  • ✓
    $[Cu(NH_3)_4]^{2+}$
  • C
    $CuSO_4$
  • D
    $Cu(CN)_2$
✓

Answer

Correct option: B.
$[Cu(NH_3)_4]^{2+}$
b
The compound which appears blue green, absorb red light as blue-green is complementary to red colour. Here $[Cu(NH_3)_4]^{2+}$ appears blue-green, so it absorbs red colour.

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