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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 5. Co-ordination chemistry4 Marks
MCQ
$\left[ Co \left( C _{2} O _{4}\right)_{3}\right]^{3-}$ is a :
  • ✓
    Low spin complex
  • B
    Paramagnetic
  • C
    High spin
  • D
    $sp ^{3} d ^{2}$ hybridized
✓

Answer

Correct option: A.
Low spin complex
a
In coordination complex $\left[ Co \left( C _{2} O _{4}\right)_{3}\right]^{3-}, Co ^{3+}$ acts as a central metal ion.

$Co ^{3+}$ shows $d ^{2} sp ^{3}$ hybridization hence all the electrons are paired and diamagnetic in nature. Thus, it is a low spin complex.

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