C) the first excited level, n = 2. D) the ground state, n = 1. 16. Where does the Paschen series of spectral lines from hydrogen gas appear in the

C) the first excited level, n = 2. D) the ground state, n = 1. 16. Where does the Paschen series of spectral lines from hydrogen gas appear in the electromagnetic spectrum? A) In the radio range. B) In the ultraviolet region. C) In the infrared. D) In the visible region.

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