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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Choose the most correct option. The oxidation state of cobalt ion in the complex [Co(NH3)5 Br]SO4 is __________.

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प्रश्न

Choose the most correct option.

The oxidation state of cobalt ion in the complex [Co(NH3)5 Br]SO4 is __________.

पर्याय

  • +2

  • +3

  • +1

  • +4

MCQ
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उत्तर

The oxidation state of cobalt ion in the complex [Co(NH3)5Br]SO4 is +3.

Explanation:

We know, sulphate ion has a charge –2

i.e., \[\ce{SO^{2-}_4}\]

Then, [Co(NH3)5Br]2+

The oxidation state of NH3 = 0

The oxidation state of Br = –1

Let the oxidation state of Cobalt ion is x

Then, x + (3 × 0) × 5 + (–1) = +2

⇒ x – 1 = +2

⇒ x = +3

Therefore the oxidation state of cobalt ion is +3.

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पाठ 9: Coordination Compounds - Exercises [पृष्ठ २०७]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 9 Coordination Compounds
Exercises | Q 1.1 | पृष्ठ २०७

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