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Friday, 9 October

NEET UG 2026 · Chemistry · Question 66

NEET 2026 Chemistry, question 66

Question 66 of the NEET 2026 paper (re-exam) is a Chemistry question from Coordination Compounds. Its idea, Spin-Only Magnetic Moment via CFT, was asked twice, in 2021 and 2026, across NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q66 · Chemistry

Among the species given below, the spin-only magnetic moment is highest for

(Given : Atomic number of Ti = 22, Mn = 25, Fe = 26 and Co = 27)

  1. 1[Mn(CN)6]3−\mathrm{[Mn(CN)_6]^{3-}}Official answer
  2. 2[Fe(CN)6]3−\mathrm{[Fe(CN)_6]^{3-}}
  3. 3[Co(NH3)6]3+\mathrm{[Co(NH_3)_6]^{3+}}
  4. 4[Ti(H2O)6]3+\mathrm{[Ti(H_2O)_6]^{3+}}

Official answer: option 1 · NTA final answer key

Same idea

Spin-Only Magnetic Moment via CFT, in other papers

NEET asked this idea twice, in 2021 and 2026. The other question below.

  • 2021 Q94Match List - I with List - II. List - I | List - II (a) [Fe(CN)6]3−\mathrm{[Fe(CN)_6]^{3-}} | (i) 5.92 BM (b) [Fe(H2O)6]3+\mathrm{[Fe(H_2O)_6]^{3+}} | (ii) 0…Match the lists · Medium

Spin-Only Magnetic Moment via CFT: every question and how it was framed

The chapter

Coordination Compounds in ten years of NEET

27 questions from 2017–2026, asked in 10 of 10 papers, about 2.6 a paper. Crystal Field Theory alone had 10.

Chapter analysisStudy this chapterPractise this chapter

Coordination Compounds: questions per paper

0364’173’181’191’202’212’222’233’243’256’26