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Question

1s22s22p63s1 is the electronic configuration of __________.

A
nitrogen
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B
sodium
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C
potassium
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D
calcium
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Solution

The correct option is B sodium
The total number of electrons present in the given element is: 2+ 2+ 6+ 1 = 11.

In an atom the number of electrons is equal to the number of protons which denote the atomic number of the given element. The atomic number of the given element is 11. Thus it is sodium.

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