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Chemistry · Coordination Compounds

JEE Main 2024 — 4 April, Shift 1 — Question 60

The correct sequence of ligands in the order of decreasing field strength is :

  1. Option A:

    CO>HX2O>FX−>SX2−\ce{CO > H2O > F^- > S^{2-}}

    Correct
  2. Option B:

    OHX−>FX−>NHX3>CNX−\ce{OH^- > F^- > NH3 > CN^-}

  3. Option C:

    NCSX−>EDTAX4−>CNX−>CO\ce{NCS^- > EDTA^{4-} > CN^- > CO}

  4. Option D:

    SX2−>OHX−>EDTAX4−>CO\ce{S^{2-} > OH^- > EDTA^{4-} > CO}

Answer: A

Step-by-step solution

We are asked to arrange ligands in order of decreasing field strength (Δ). Step 1: Recall spectrochemical series:

IX−<BrX−<SX2−<FX−<OHX−<HX2O<NHX3<CNX−<CO\ce{I^- < Br^- < S^{2-} < F^- < OH^- < H2O < NH3 < CN^- < CO}

Step 2: Identify the given ligands:} CO,HX2O,FX−,SX2−\ce{CO, H2O, F^-, S^{2-}} Step 3: Arrange in decreasing Δ using the series:

CO>HX2O>FX−>SX2−\ce{CO > H2O > F^- > S^{2-}}

Step 4: Answer: Option (a)

Answer key and solution verified before publishing.

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Exam
JEE Main 2024
Paper
4 April, Shift 1
Subject
Chemistry
Chapter
Coordination Compounds
Topic
Properties and importance of Coordination Complexes

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