The number of unpaired electrons in the outer subshell of a Cl atom is
A)0
B)1
C)3
D)2
E) none of these

Name: The number of unpaired electrons in the outer subshell of a Cl atom is A)0 B)1 C)3 D)2 E) none of these
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Quizplus · Accepted Answer

Chlorine has 7 electrons in its outermost shell, with 2 electrons in its 2s subshell and 5 electrons in its 2p subshell. Since each orbital can hold a maximum of 2 electrons, there is 1 unpaired electron in one of the 2p orbitals, giving a total of 1 unpaired electron.

The Number of Unpaired Electrons in the Outer Subshell of a Cl