Problem: Does the electron configuration [Ar]4s23d54p1 correspond to an excited state? Identify the atom and write the ground-state electron configuration if appropriate. How many unpaired electrons are present in this species?

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1. The electron configuration of an element is the distribution of its electrons within atomic orbitals.

According to Auf Bau Principle, electrons fill in lower energy orbitals before moving to higher energy orbitals. The orbital subshells s, p, d, and f, each have a maximum number of electrons it can accommodate and are filled up according to the Auf Bau Diagram.

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Does the electron configuration [Ar]4s23d54p1 correspond to an excited state? Identify the atom and write the ground-state electron configuration if appropriate. How many unpaired electrons are present in this species?