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प्रश्न
What is the total number of unpaired electrons in observed configuration of elements present at group-11 and period-4 in periodic table?
पर्याय
1
3
4
7
MCQ
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उत्तर
1
Explanation:
Copper (Z = 29) is placed at group 11 and period 4 in the periodic table.
Electronic configuration of \[\ce{Cu = [Ar] 3d^10 4S^1}\]
No. of unpaired electrons = 1
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