JEE Main · Chemistry · Coordination Compounds
Facial and Meridional Isomerism in MA3B3
JEE Main asked Facial and Meridional Isomerism in MA3B3 3 times in 3 of the 108 shifts Lumi analysed, in 2020, 2023 and 2025. It belongs to Coordination Isomerism, in Coordination Compounds (Chemistry). The longest wait between two years asking it was 3 years.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 3 of 8
- First asked
- 2020
- last in 2025
- Pattern
- Frequent
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2020, 2023 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.
Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Single correct is the usual form. Skill tested: application.
- Geometrical isomers of complex from clues
- Identify complexes showing a type of isomerism
Difficulty
1 of the 3 questions had a numerical answer.
Every question
All 3 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 4 Apr 2025, Shift 2 · Q75A metal complex with a formula is involved in hybridisation. It upon reaction with excess of…MediumNumerical value
- 11 Apr 2023, Shift 1 · Q69Which of the following complex has a possibility to exist as meridional isomer?EasySingle correct
- 8 Jan 2020, Shift 1 · Q37The complex that can show - and - isomers is :EasySingle correct
Shifts: 8 Jan 2020, Shift 1, 11 Apr 2023, Shift 1, 4 Apr 2025, Shift 2.
Same topic
Other ideas in Coordination Isomerism
Coordination Isomerism has 20 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.
- Precipitation Tests for Ionization Isomers8× · 2026
- Ambidentate Ligands in Linkage Isomerism4× · 2024
- Square Planar Geometry3× · 2023
- Total Isomer Calculation3× · 2023
- Ambidentate Ligands in Linkage Isomerism2× · 2026
- Octahedral Geometrical2× · 2025
- Optical Activity in M(AA)2B2 Complexes2× · 2024
- Identifying Coordination Isomerismonce · 2026
- Water Loss and Molar Conductivity in Hydrate Isomersonce · 2026
- Optical Isomerism in Chelatesonce · 2025
- Optical Isomerism in Tetrahedral Complexesonce · 2024
- Chemical Tests for Ionization Isomersonce · 2021