Low spin complex of d6 -cation in an octahedral field will have

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 Multiple Choice QuestionsMultiple Choice Questions

181.

An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium (III) chloride. The number of moles of AgCl precipitate would be

  • 0.001

  • 0.002

  • 0.003

  • 0.003

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182.

Which of the following acids does not exhibit optical isomerism?

  • Maleic acid

  • α-amino acids

  • Lactic acid

  • Lactic acid

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183.

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

  • [Ni(NH3)6]2+

  • [Zn(NH3)6]2+

  • [Cr(NH3)6]3+

  • [Cr(NH3)6]3+

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184.

Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni (II).Which of the following statements is not true?

  • Red Complex has a square planar geometry

  • Complex has symmetrical H- bonding

  • Red complex has a tetrahedral geometry

  • Red complex has a tetrahedral geometry

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185.

Low spin complex of d6 -cation in an octahedral field will have the following energy

o = Crystal field splitting energy in an octahedral field,
P= electron pairing energy)

  • negative 12 over 5 increment subscript straight o space plus straight P
  • negative 12 over 5 increment subscript o space plus 3 P
  • negative 2 over 5 increment subscript straight o space plus 2 straight P
  • negative 2 over 5 increment subscript straight o space plus 2 straight P


A.

negative 12 over 5 increment subscript straight o space plus straight P

According to crystal field theory, splitting in octahedral field for low spin complex of d6-cation is shown as,




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186.

The complexes [Co(NH3)6][Cr(CN)6] and [Cr(NH3)6][Co(CN)6] are the examples of which type of which type of isomerism?

  • Ionisation isomerism

  • Coordination isomerism

  • Geometrical isomerism

  • Geometrical isomerism

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187.

The d- electron configurations of Cr3+, Mn2+ , Fe2+, and Co2+ are d4 ,d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour?

(At. no. Cr = 24, Mn = 25, Fe =26, Co = 27) 

  • [Fe(H2O)6]2+

  • [Co(H2O)6]2+

  • [Cr(H2O)6]2+

  • [Cr(H2O)6]2+

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188.

Of the following complex ions, which is diamagnetic in nature?

  • [Ni(CN)4]2-

  • [CuCl4]2-

  • [CoF6]3-

  • [CoF6]3-

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189.

The complex, [Pt (Py)(NH3)BrCl] will have how many geometrical isomers?

  • 4

  • 0

  • 2

  • 2

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190.

The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where en is ethylenediamine) is 

  • 9

  • 6

  • 7

  • 7

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