Question
Find EAN of Fe in Fe(CO) _5
MHT CET
Chemistry
Coordination Compounds
2026
MHT CET 2026 (18 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 35
- B. 36
- C. 26
- D. 30
Answer
B. 36
Step-by-step solution
The Effective Atomic Number (EAN) is calculated using the formula: EAN = Z - Oxidation State + 2 Coordination Number For Fe(CO) _5: Atomic number of Fe (Z) = 26 Oxidation state of Fe = 0 (since CO is a neutral ligand) Coordination number = 5 EAN = 26 - 0 + 2 5 EAN = 26 + 10 = 36
Related: Chemistry — Coordination Compounds · All PYQ Banks