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Co-ordination Compounds — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryCo-ordination Compounds1 Mark
MCQ
Oxidation number of cobalt in $K[Co(CO)_{4}]$ is:
  • A
    $+1$
  • B
    $+3$
  • C
    $-1$
  • D
    $-3$
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