WBJEE 2021 Physics and Chemistry Solved Paper
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CHEMISTRY
CATEGORY - I (Q41 to Q70)
Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.
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Question : 64 of 80
Marks:
+1,
-0
Indicate the number of unpaired electrons in K 3 [ F e ( C N ) 6 ] K 4 [ F e ( C N ) 6 ]
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