[ General Glossary, Quantum Glossary, Atomic Glossary ]
The Hydrogen Energy Levels

The Hydrogen Energy Levels

Energy (eV)	Configuration	n	l	j	Notes
0.0	1s1 2S1/2	1	0	1/2	(2 states)
10.19881	2s1 2S1/2	2	0	1/2	LI level (2 states)
10.19881	2p1 2Po1/2	2	1	1/2	LII level (2 states)
10.19885	2p1 2Po3/2	2	1	3/2	LIII level (4 states)
12.08749	3s1 2S1/2	3	0	1/2	MI level (2 states)
12.08749	3p1 2Po1/2	3	1	1/2	MII level (2 states)
12.08751	3p1 2Po3/2	3	1	3/2	MIII level (4 states)
12.08751	3d1 2D3/2	3	2	3/2	MIV level (4 states)
12.08751	3d1 2D5/2	3	2	5/2	MIV level (6 states)
12.74853	4s1 2S1/2	4	0	1/2	NI level (2 states)
12.74853	4p1 2Po1/2	4	1	1/2	NII level (2 states)
12.74854	4p1 2Po3/2	4	1	3/2	NIII level (4 states)
12.74854	4d1 2D3/2	4	2	3/2	NIV level (4 states)
12.74854	4d1 2D5/2	4	2	5/2	NV level (6 states)
12.74854	4f1 2Fo5/2	4	3	5/2	NV level (6 states)
12.74854	4f1 2Fo7/2	4	3	7/2	NVI level (8 states)
13.05450	5s1 2S1/2	5	0	1/2	OI level (2 states)
13.05450	5p1 2Po1/2	5	1	1/2	OII level (2 states)
13.05450	5p1 2Po3/2	5	1	3/2	OIII level (4 states)
13.05450	5d1 2D3/2	5	2	3/2	OIV level (4 states)
13.05450	5d1 2D5/2	5	2	5/2	OV level (6 states)
13.05450	5f1 2Fo5/2	5	3	5/2	OVI level (6 states)
13.05450	5f1 2Fo7/2	5	3	7/2	OVI level (8 states)
13.05450	5g1 2G7/2	5	4	7/2	OVII level (8 states)
13.05450	5g1 2G9/2	5	4	9/2	OVIII level (10 states)
etc	etc				etc
13.59843	(bound/free)				The ionization potential

Additional levels for hydrogen, and any other ion can be obtained from The NIST database.