Match List - I with List - II. List - I; List - II (a) [Fe(CN)6]^3-; (i) 5.92 BM (b) [Fe(H2O)6]^3+; (ii) 0 BM (c) [Fe(CN)6]^4-; (iii) 4.90 BM (d) [Fe(H2O)6]^2+; (iv) 1.73 BM Choose the correct answer from the options given below.

NEET UG 2021 · Chemistry · Question 94

NEET 2021 Chemistry, question 94

Question 94 of the NEET 2021 paper (code O1) 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 2.

Updated 2026-10-08

Q94 · Chemistry

\mathrm{[Fe(CN)_6]^{3-}}

List - I	List - II
(a) $\mathrm{[Fe(CN)_6]^{3-}}$	(i) 5.92 BM
(b) $\mathrm{[Fe(H_2O)_6]^{3+}}$	(ii) 0 BM
(c) $\mathrm{[Fe(CN)_6]^{4-}}$	(iii) 4.90 BM
(d) $\mathrm{[Fe(H_2O)_6]^{2+}}$	(iv) 1.73 BM

1 (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii) 2 (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii) Official answer 3 (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii) 4 (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

Official answer: option 2 · 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.

2026 Q 66 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) One-line MCQ \cdot 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 analysis Study this chapter Practise this chapter

Spin-Only Magnetic Moment via CFT, in other papers

Coordination Compounds in ten years of NEET

Coordination Compounds: questions per paper