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Coordination Compounds · Question 2

JEE Main 2026 (Online) 6th April Morning ShiftMatchingMedium📈 Topic in 55% papers+4−1
1

Match the LIST-I with LIST-II

  1. A-III, B-IV, C-II, D-I
  2. A-III, B-I, C-IV, D-II
  3. A-III, B-IV, C-I, D-II
  4. A-II, B-I, C-IV, D-III

Answer

(3) A-III, B-IV, C-I, D-II

Solution

Tetrahedral field: e set (lower, −0.6 t per electron) and t2 set (higher, +0.4 t per electron)

∵ t is small ( t < P) ⇒ high-spin filling

CFSE = (-0.6 ne + 0.4 nt2) t

A. d2: e2t20 ⇒ −1.2 t ⇒ III

B. d4: e2t22 ⇒ −1.2 + 0.8 = −0.4 t ⇒ IV

C. d6: e3t23 ⇒ −1.8 + 1.2 = −0.6 t ⇒ I

D. d8: e4t24 ⇒ −2.4 + 1.6 = −0.8 t ⇒ II

∴ A-III, B-IV, C-I, D-II

Answer: (3)

JEE Main 2026 (Online) 6th April Morning Shift

Keep practising — Coordination Compounds

2

Which of the following are true about the energy of the given d-orbitals of a tetrahedral complex? Choose the correct answer from the options given below :

  1. A, B and D only
  2. A and B only
  3. B and D only
  4. B, C and D only
JEE Main 2026 (Online) 6th April Morning Shift
3

Which of the following sequences of hybridisation, geometry and magnetic nature are correct for the given coordination compounds ? Choose the correct answer from the options given below :

  1. A, B, C and D
  2. B, C and D only
  3. A, C and D only
  4. A, B and D only
JEE Main 2026 (Online) 6th April Evening Shift
4

An excess of AgNO3 is added to 100 mL of a 0.05 M solution of tetraaquadichloridochromium (III) chloride. The number of moles of AgCl precipitated will be 10-3. (Nearest integer)

JEE Main 2026 (Online) 6th April Evening Shift
5

The correct statements about metal carbonyls are Choose the correct answer from the options given below :

  1. A and B Only
  2. A, C and D Only
  3. B and C Only
  4. A and D Only
JEE Main 2026 (Online) 5th April Morning Shift
6

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below

  1. Both Statement I and Statement II are correct
  2. Both Statement I and Statement II are incorrect
  3. Statement I is correct but Statement II is incorrect
  4. Statement I is incorrect but Statement II is correct
JEE Main 2026 (Online) 5th April Morning Shift
7

Identify the correct statements from the following Choose the correct answer from the options given below :

  1. A, B, C, D and E
  2. B, C and D only
  3. A, C and D only
  4. A, C and E only
JEE Main 2026 (Online) 5th April Evening Shift
8

The total number of unpaired electrons present in the d3, d4 (low spin) d5 (high spin), d6 (high spin) and d7 (low spin) octahedral complex systems is .

JEE Main 2026 (Online) 5th April Evening Shift
9

Consider the metal complexes [Ni(en)3]2+ (A), [NiCl4]2- (B) and [Ni(NH3)6]2+ (C). Choose the CORRECT option by considering the number of unpaired electrons present in (A), (B) and (C) respectively and the order of frequency of absorption.

  1. 2, 2, 2 and (A) > (C) > (B)
  2. 0, 2, 0 and (A) > (C) > (B)
  3. 2, 2, 0 and (B) > (C) > (A)
  4. 2, 2, 2 and (C) > (A) > (B)
JEE Main 2026 (Online) 4th April Evening Shift
10

Match List - I with List - II.

  1. A-I, B-II, C-III, D-IV
  2. A-II, B-III, C-IV, D-I
  3. A-III, B-IV, C-I, D-II
  4. A-IV, B-I, C-II, D-III
JEE Main 2026 (Online) 2nd April Morning Shift
11

5.33 g of CrCl3 6H2O, which is a 1 : 3 electrolyte, is dissolved in water and is passed through a cation exchanger. The chloride ions in the eluted solution, on treatment with AgNO3 results in 8.61 g of AgCl. The ratio of moles of complex reacted and moles of AgCl formed is 10-2. (Nearest integer) [Molar mass in g mol-1 Cr : 52, Ag : 108, Cl : 35.5, H : 1, O : 16]

JEE Main 2026 (Online) 2nd April Morning Shift

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