Fe²⁺ has electronic configuration [Ar]3d⁶. In high spin state, 4 electrons are unpaired.
Back to JEE Main 2020 Inorganic Chemistry
JEE Main 2020 — Chemistry Inorganic Chemistry
medium
mcq
2020
Official previous-year question
Verified 30 May 2026.
Question
The number of unpaired electrons in Fe²⁺ ion is:
Options
- A2
- B3
- C4
- D5
Solution
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