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प्रश्न
The oxidation number of cobalt in K[Co(CO)4] is ______.
विकल्प
+1
+3
−1
−3
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उत्तर
The oxidation number of cobalt in K[Co(CO)4] is −1.
We know that CO is a neutral ligand and K carries a charge of +1.
+1 + x + 4(0) = 0
+1 + x + 0 = 0
x = −1
Therefore, the oxidation number of Co in the given complex is −1.
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