Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Coordination Compounds question

2022 · 30 Jun · Shift 1 · Q19
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Coordination Compounds
  5. /2022 · 30 Jun · Shift 1 · Q19

Coordination Compounds question

2022 · 30 Jun · Shift 1 · Q19

JEE MainChemistryCoordination CompoundsNumerical+4 / −1
In the following brown complex, the oxidation state of iron is +‾\underline{\hspace{2cm}}​. [Fe(H2O)6]2++NO→[Fe(H2O)5(NO)]2+Brown complex+H2O{[Fe{({H_2}O)_6}]^{2 + }} + NO \to \mathop {{{[Fe{{({H_2}O)}_5}(NO)]}^{2 + }}}\limits_{\text{Brown complex}} + {H_2}O[Fe(H2​O)6​]2++NO→Brown complex[Fe(H2​O)5​(NO)]2+​+H2​O
Numerical answer
View written solutionFree

Correct answer: 1

  1. Identify the complex whose iron oxidation state is required

    The brown complex is: [Fe(H2O)5(NO)]2+[Fe(H_2O)_5(NO)]^{2+}[Fe(H2​O)5​(NO)]2+

  2. Assign charges of ligands

    • H2OH_2OH2​O is a neutral ligand.
    • In the brown ring complex, the nitrosyl ligand NONONO is treated as NO+NO^+NO+ (linear nitrosyl ligand).

  3. Let oxidation state of Fe be xxx

    Total charge on the complex is +2+2+2.

    So, x+5(0)+(+1)=+2x + 5(0) + (+1) = +2x+5(0)+(+1)=+2

    x+1=2x + 1 = 2x+1=2

    x=+1x = +1x=+1

  4. Therefore

    The oxidation state of iron in the brown complex is: +1\boxed{+1}+1​

PreviousNext

More from Coordination Compounds

  • Spin only magnetic moment (μ s) of K3​[Fe(CN)6​] is ​ B.M. (Nearest integer)2022 · Numerical
  • Correct formula of the compound which gives a white precipitate with BaCl2​ solution, but not with AgNO3​ solution, is :2022 · MCQ
  • The potassium ferrocyanide solution gives a Prussian blue colour, when added to :2021 · MCQ
  • The sum of oxidation states of two silver ions in [Ag(NH3​)2​] [Ag(CN)2​] complex is ​.2021 · Numerical
  • The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (Mz+) are − 0.8 Δ 0 and 3.87 BM, respectively. Identify (Mz+) :2021 · MCQ
  • The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl3​ . 4NH3​ is ​. (Round off to the Nearest Integer).2021 · Numerical
  • [Ti(H2​O)6​]3+ absorbs light of wavelength 498 nm during a d − d transition. The octahedral splitting energy for the above complex is ​× 10 − 19 J. (Round off to the Nearest Integer). h = 6.626 ×…2021 · Numerical
  • Match List - I with List - II : Choose the correct answer from the options given below : Includes table2021 · MCQ