The electronic configuration of an atom with atomic number 19 is:

1, 2, 2, 8

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2, 8, 9

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2, 8, 8, 1

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2, 10, 7

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Solution

The correct option is C
2, 8, 8, 1

The electronic configuration for element with atomic no. 19 is 2 , 8, 8 , 1.

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2, 8, 18, 7.

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}

12

(19)

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