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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 15 April 2023, Shift 1, Chemistry Q70

Question 70 of 90 in this shift, Chemistry question 10 of 30, Section A.

The complex with highest magnitude of crystal field splitting energy (Δ0\Delta_0) is
  1. (1)[Ti(OH2)6]3+[\mathrm{Ti(OH_2)_6}]^{3+}
  2. (2)[Cr(OH2)6]3+[\mathrm{Cr(OH_2)_6}]^{3+}Official answer
  3. (3)[Mn(OH2)6]3+[\mathrm{Mn(OH_2)_6}]^{3+}
  4. (4)[Fe(OH2)6]3+[\mathrm{Fe(OH_2)_6}]^{3+}

Official answer

Option 2

NTA final key.

Same topic in other shifts

All Crystal Field Theory questions
  1. 2 Apr 2026, Shift 1 · Q62Match List - I with List - II. List - I : Chromium (III) Complexes (en = ethylene diamine) List - II : Δ0\Delta_0 (cm−1\mathrm{cm^{-1}}) A.…MediumMatch the list
  2. 4 Apr 2026, Shift 1 · Q62Match the LIST-I with LIST-II List-I (Complex ion): A. [Cr(H2O)6]2+[\mathrm{Cr(H_2O)_6}]^{2+}; B. [Co(H2O)6]2+[\mathrm{Co(H_2O)_6}]^{2+}; C.…EasyMatch the list
  3. 4 Apr 2026, Shift 2 · Q60Consider the metal complexes [Ni(en)3]2+\mathrm{[Ni(en)_3]^{2+}} (A), [NiCl4]2−\mathrm{[NiCl_4]^{2-}} (B) and [Ni(NH3)6]2+\mathrm{[Ni(NH_3)_6]^{2+}} (C). Choose the…MediumSingle correct
  4. 5 Apr 2026, Shift 1 · Q61The correct statements about metal carbonyls are A. The metal-carbon bonds in metal carbonyls possess both σ\sigma and π\pi-character.…MediumOther
  5. 5 Apr 2026, Shift 1 · Q62Given below are two statements: Statement I: Each electron in ege_g orbitals destabilizes the orbitals by +0.6 Δo+0.6\,\Delta_o and each…EasyTwo statements
  6. 5 Apr 2026, Shift 2 · Q71The total number of unpaired electrons present in the d3d^3, d4d^4 (low spin) d5d^5 (high spin), d6d^6 (high spin) and d7d^7 (low spin)…EasyNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.