Among the following , identify the species with an atom in +6 oxidation state :

  • Option 1)

    MnO4-

  • Option 2)

    Cr ( CN )63-

  • Option 3)

    NiF62-

  • Option 4)

    CrO2Cl2

 

Answers (1)

As we learnt in 

Oxidation Number -

Oxidation number denotes the oxidation state of an element in a compound ascertained according to a set of rules formulated on the basis that electron pair in a covalent bond belogs entirely to more electronegative elements.

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Oxidation number and oxidation state -

A term that is often used interchangeably with the oxidation number is the oxidation state. This implies oxidation number denote the oxidation state of an element.

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 Let's examine each species

MnO_{4}^{-},\ M_{n}:+7

Cr\left ( CN \right )_{6}^{3-},\ Cr:+3 

NiF_{6}^{2-},\ Ni:+4

CrO_{2}Cl_{2}:Cr:+6

\therefore The solution is 4


Option 1)

MnO4-

Incorrect

Option 2)

Cr ( CN )63-

Incorrect

Option 3)

NiF62-

Incorrect

Option 4)

CrO2Cl2

Correct

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