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Orbital Diagrams

The atomic nu...

Question

The atomic number of element with electronic configuration: ${1 s}^{2} {2 s}^{2} {2 p}^{3}$ is:

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Solution

Total number of electron it have ${1 s}^{2} {2 s}^{2} {2 p}^{3} = 2 + 2 + 3 = 7$
So, its atomic number is 7.

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