1. Tardigrade
  2. Question
  3. Chemistry
  4. Consider the following statements in respect of [ CoCl 6]4- complex ion I. It is paramagnate II. It is low-spin complex III. Oxidation number of cobalt is -4 IV. The coordination number of cobalt is 6 Select the correct statement

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Q. Consider the following statements in respect of $\left[ CoCl _6\right]^{4-}$ complex ion
I. It is paramagnate
II. It is low-spin complex
III. Oxidation number of cobalt is $-4$
IV. The coordination number of cobalt is $6$
Select the correct statement

Coordination Compounds

Solution:

$\left[ CoCl _6\right]^{4-}$
Oxidation number of cobalt $=+2$
$CN$ of cobalt $=6$
image
Hence, no pairing
It is thus paramagnetic and high spin complex Thus, (I) and (IV) are correct