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Question

Which of the following is the correct electronic configuration of potassium?

A
2, 8, 9
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B
8, 2, 9
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C
2, 8, 8, 1
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D
1, 2, 8, 8
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Solution

The correct option is C 2, 8, 8, 1
The atomic number of potassium is 19. K shell will have 2 electrons. L shell will contain 8 electrons. M shell will also have 8 electrons and the remaining one electron will be in N shell.

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