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← Bihar Board Class 12 PYQ
Coordination Compounds
Bihar Board Class 12 · Chemistry · 33 past questions
Topic
Coordination number, EAN and ligands
3
Magnetic properties and d-electrons
3
Isomerism and ionisation in solution
2
Geometry and bonding
1
Oxidation state of central metal
1
Basic terms and Werner's theory
0
Nomenclature and formulae
0
Level
Easy
6
Moderate
3
Year
2026
0
2025
1
2024
0
2023
0
2022
1
2021
0
2019
0
2018
0
2017
1
2016
0
3 of 33 ·
show all
Q6
2025 Set D
The effective atomic number (E.A.N.) of cobalt in complex ion $[Co(en)_2Cl_2]^+$ is
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Q20
2022 Set E
Which statement is incorrect ?
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Q31
2017
The EAN of cobalt in the complex ion $[Co(en)_2Cl_2]$ is -
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