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Identify the element symbol of the following element. An excited state of this element has the...

Identify the element symbol of the following element.

An excited state of this element has the electron configuration 1s22s22p53s1.

The ground-state electron configuration is [Ne]3s23p2.

An excited state of this element has the electron configuration [Kr]4d95s1.

The ground-state electron configuration contains three unpaired 4p electrons.
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