Wavelengths of Prominent K-Shell Line Transitions
(in Angstroms)
Element	Lya1	Lya2	Lyb	Lyg	Lyd	Lye	Lyz	Lyh	Hea1	Hea2	Heb	Heg	Hed	Hee	Hez	Heh	Heq	Hei	Element
He	303.786	303.780	256.317	243.027	237.331	234.347	232.584	231.454	591.412	584.340	537.030	522.213	515.617	512.098	509.998	508.643	507.718	507.058	He
Li	135.001	134.996	113.905	107.999	105.468	104.142	103.359	102.856	202.322	199.282	178.015	171.582	168.740	167.270	166.390	166.600	166.200	165.900	Li
Be	75.931	75.926	64.064	60.743	59.320	58.574	58.133	57.851	101.693	100.255	88.309	84.754	83.200	82.378	81.890	81.820	81.600	81.450	Be
B	48.591	48.586	40.996	38.871	37.960	37.483	37.201	37.020	61.088	60.314	52.685	50.435	49.455	48.939	48.730	48.530	48.400	48.300	B
C	33.740	33.734	28.466	26.990	26.357	26.026	25.830	25.705	40.731	40.269	34.973	33.426	32.754	32.400	32.188	32.064	32.010	31.950	C
N	24.779	20.910	19.826	19.361	19.118	18.974	18.882	18.819	29.084	28.787	24.898	23.771	23.277	23.024	22.870	22.765	22.740	22.690	N
O	18.972	18.967	16.006	15.176	14.821	14.634	14.524	14.454	21.804	21.602	18.627	17.768	17.396	17.200	17.086	17.030	16.980	16.940	O
F	14.988	14.982	12.643	11.988	11.707	11.560	11.473	11.418	16.947	16.807	14.458	13.781	13.488	13.334	13.244	13.185	13.143	13.130	F
Ne	12.138	12.132	10.238	9.708	9.481	9.362	9.291	9.246	13.553	13.447	11.544	11.001	10.765	10.640	10.646	10.565	10.513	10.480	Ne
Na	10.026	10.026	8.461	8.021	7.833	7.735	7.677	7.639	11.088	11.004	9.427	8.983	8.788	8.686	8.639	8.600	8.574	8.555	Na
Mg	8.425	8.419	7.106	6.736	6.576	6.503	6.448	6.417	9.228	9.168	7.850	7.473	7.309	7.225	7.177	7.156	7.128	7.116	Mg
Al	7.176	7.170	6.052	5.739	5.604	5.534	5.491	5.463	7.805	7.757	6.635	6.314	6.175	6.101	6.059	6.029	6.010	5.992	Al
Si	6.186	6.180	5.217	4.947	4.831	4.770	4.735	4.712	6.687	6.649	5.681	5.405	5.285	5.233	5.198	5.174	5.158	5.146	Si
P	5.386	5.380	4.543	4.308	4.207	4.154	4.123	4.103	5.792	5.759	4.918	4.680	4.576	4.520	4.485	4.467	4.453	4.443	P
S	4.733	4.727	3.991	3.784	3.696	3.649	3.622	3.604	5.065	5.037	4.300	4.089	3.998	3.949	3.922	3.904	3.892	3.883	S
Cl	4.191	4.185	3.534	3.351	3.272	3.231	3.207	3.192	4.467	4.444	3.788	3.603	3.523	3.481					Cl
Ar	3.737	3.731	3.150	2.987	2.917	2.881	2.859	2.845	3.969	3.949	3.365	3.200	3.128	3.095	3.080	3.066	3.056	3.049	Ar
K	3.352	3.347	2.826	2.680	2.617	2.584	2.565	2.553	3.548	3.531	3.008	2.860	2.796						K
Ca	3.024	3.018	2.549	2.417	2.361	2.331	2.314	2.303	3.193	3.177	2.705	2.571	2.514	2.484	2.477	2.465	2.457	2.452	Ca
Sc	2.742	2.736	2.311	2.191	2.140	2.113	2.098	2.087	2.885	2.872	2.445	2.324	2.272	2.245					Sc
Ti	2.497	2.491	2.104	1.995	1.949	1.924	1.910	1.901	2.623	2.610	2.221	2.111	2.063						Ti
V	2.283	3.378	1.924	1.825	1.782	1.760	1.747	1.738	2.394	2.382	2.026	1.925	1.882						V