2.66 Indicate the number of unpaired electrons in :
(d) Fe
The electronic configuration of Fe : .
Hence, the number of unpaired electrons are 4 (in 3d ).
CBSE 12th Result 2026: Board refutes OSM glitch claims, says Class 12 results likely in third week of May
CBSE 12th Result 2026 LIVE: Class 12 results soon at cbse.gov.in, direct link, digilocker, pass percentage
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