How many unpaired electrons does manganese have in its ground state?
A) 6
B) 25
C) 10
D) 5
E) 3

Name: How many unpaired electrons does manganese have in its ground state? A) 6 B) 25 C) 10 D) 5 E) 3
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Question

Quizplus · Accepted Answer

The atomic number of manganese is 25. Its electron configuration in the ground state is [Ar] 3d5 4s2. In this configuration, there are five unpaired electrons in the 3d orbital, and all other orbitals are fully occupied with paired electrons. So the correct answer is option D, which is 5.

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