Identify the following three elements. (Capitalization counts!) An excited state of this element has the electron configuration

Question

Identify the following three elements.
(Capitalization counts!)
An excited state of this element has the electron configuration 1s²2s²2p 3s¹.
The ground-state electron configuration is [Kr]5s²4d¹05p².
The ground-state electron configuration is [Ar]4s²3d¹04p².

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