why ionized calcium can form absorption lines, but ionized hydrogen cannot?

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why ionized calcium can form absorption lines, but ionized hydrogen cannot?

2007-07-04 08:10:36 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science

2 answers

Ionized hydrogen has no electrons left. It's just a proton. So it can't have atomic (or even nuclear) energy levels.

2007-07-04 08:16:49 · answer #1 · answered by Anonymous · 1⤊ 0⤋

Completely ionized hydrogen has no electrons, but there are energy states in the atom less than complete ionization, and these produce both absorption and emission spectrum. See http://csep10.phys.utk.edu/astr162/lect/light/absorption.html

You should not take the statement to mean that hydrogen has no absorption spectrum.

2007-07-04 15:39:32 · answer #2 · answered by gp4rts 7 · 1⤊ 0⤋