The electronic configurations of four elements are given below. Which of the corresponding elements has maximum total electronic spin?
A
1s22s22p6
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B
1s22s22p1
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C
1s22s22p5
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D
1s22s22p4
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Solution
The correct option is D1s22s22p4 Total spin is given by n/2 where n is the total number of unpaired electrons. More the number of unpaired electrons more is the net spin.
In 1s22s22p6 there are no unpaired electrons.
In 1s22s22p1 there is one unpaired electron.
In 1s22s22p5 there is one unpaired electron.
In 1s22s22p4 there are two unpaired electrons.
Thus the element having the electronic configuration 1s22s22p4 has the highest net spin.