Index: molecuilder/src/elements.db
===================================================================
--- molecuilder/src/elements.db	(revision a0bcf15381c41adb281e0a5d9293f02515ba70c0)
+++ molecuilder/src/elements.db	(revision a0bcf15381c41adb281e0a5d9293f02515ba70c0)
@@ -0,0 +1,112 @@
+#	Covalent	radius	of	each	element	in	Angstroem	from	CSD	(binding	is:	[Rcov(A)+Rcov(B)-t,Rcov(A)+Rcov(B)+t]	with	t	=	0.4A
+#Element	Name	Symbol	Period	Group	Block	Atomic	Number	AtomicWeight	Covalent	Radius	vdW	Radius
+Hydrogen	H	1	1	s	1	1.008	0.23	1.09
+Helium	He	1	18	p	2	4.003	1.50	1.40
+Lithium	Li	2	1	s	3	6.941	0.68	1.82
+Beryllium	Be	2	2	s	4	9.012	0.35	2.00
+Boron	B	2	13	p	5	10.811	0.83	2.00
+Carbon	C	2	14	p	6	12.011	0.68	1.70
+Nitrogen	N	2	15	p	7	14.007	0.68	1.55
+Oxygen	O	2	16	p	8	15.999	0.68	1.52
+Fluorine	F	2	17	p	9	18.998	0.64	1.47
+Neon	Ne	2	18	p	10	20.180	1.50	1.54
+Sodium	Na	3	1	s	11	22.991	0.97	2.27
+Magnesium	Mg	3	2	s	12	24.305	1.10	1.73
+Aluminium	Al	3	13	p	13	26.982	1.35	2.00
+Silicon	Si	3	14	p	14	28.086	1.20	2.10
+Phosphorus	P	3	15	p	15	30.974	1.05	1.80
+Sulphur	S	3	16	p	16	32.066	1.02	1.80
+Chlorine	Cl	3	17	p	17	35.453	0.99	1.75
+Argon	Ar	3	18	p	18	39.948	1.51	1.88
+Potassium	K	4	1	s	19	39.098	1.33	2.75
+Calcium	Ca	4	2	s	20	40.078	0.99	2.00
+Scandium	Sc	4	3	d	21	44.956	1.44	2.00
+Titanium	Ti	4	4	d	22	47.867	1.47	2.00
+Vanadium	V	4	5	d	23	50.942	1.33	2.00
+Chromium	Cr	4	6	d	24	51.996	1.35	2.00
+Manganese	Mn	4	7	d	25	54.938	1.35	2.00
+Iron	Fe	4	8	d	26	55.845	1.34	2.00
+Cobalt	Co	4	9	d	27	58.933	1.33	2.00
+Nickel	Ni	4	10	d	28	58.693	1.50	1.63
+Copper	Cu	4	11	d	29	63.546	1.52	1.40
+Zinc	Zn	4	12	d	30	65.390	1.45	1.39
+Gallium	Ga	4	13	p	31	69.723	1.22	1.87
+Germanium	Ge	4	14	p	32	72.610	1.17	2.00
+Arsenic	As	4	15	p	33	74.922	1.21	1.85
+Selenium	Se	4	16	p	34	78.960	1.22	1.90
+Bromine	Br	4	17	p	35	79.904	1.21	1.85
+Krypton	Kr	4	18	p	36	83.800	1.50	2.02
+Rubidium	Rb	5	1	s	37	85.468	1.47	2.00
+Strontium	Sr	5	2	s	38	87.620	1.12	2.00
+Yttrium	Y	5	3	d	39	88.906	1.78	2.00
+Zirconium	Zr	5	4	d	40	91.224	1.56	2.00
+Niobium	Nb	5	5	d	41	92.906	1.48	2.00
+Molybdenum	Mo	5	6	d	42	95.940	1.47	2.00
+Technetium	Tc	5	7	d	43	98	1.35	2.00
+Ruthenium	Ru	5	8	d	44	101.070	1.40	2.00
+Rhodium	Rh	5	9	d	45	102.906	1.45	2.00
+Palladium	Pd	5	10	d	46	106.420	1.50	1.63
+Silver	Ag	5	11	d	47	107.868	1.59	1.72
+Cadmium	Cd	5	12	d	48	112.411	1.69	1.58
+Indium	In	5	13	p	49	114.818	1.63	1.93
+Tin	Sn	5	14	p	50	118.71	1.46	2.17
+Antimony	Sb	5	15	p	51	121.760	1.46	2.00
+Tellurium	Te	5	16	p	52	127.600	1.47	2.06
+Iodine	I	5	17	p	53	126.904	1.40	1.98
+Xenon	Xe	5	18	p	54	131.290	1.50	2.16
+Caesium	Cs	6	1	s	55	132.905	1.67	2.00
+Barium	Ba	6	2	s	56	137.327	1.34	2.00
+Lutetium	Lu	6	3	d	71	174.967	1.72	2.00
+Hafnium	Hf	6	4	d	72	178.490	1.57	2.00
+Tantalum	Ta	6	5	d	73	180.948	1.43	2.00
+Tungsten	W	6	6	d	74	183.840	1.37	2.00
+Rhenium	Re	6	7	d	75	186.207	1.35	2.00
+Osmium	Os	6	8	d	76	190.230	1.37	2.00
+Iridium	Ir	6	9	d	77	192.217	1.32	2.00
+Platinum	Pt	6	10	d	78	195.078	1.50	1.72
+Gold	Au	6	11	d	79	196.967	1.50	1.66
+Mercury	Hg	6	12	d	80	200.590	1.70	1.55
+Thallium	Tl	6	13	p	81	204.383	1.55	1.96
+Lead	Pb	6	14	p	82	207.200	1.54	2.02
+Bismuth	Bi	6	15	p	83	208.980	1.54	2.00
+Polonium	Po	6	16	p	84	210	1.68	2.00
+Astatine	At	6	17	p	85	210	1.21	2.00
+Radon	Rn	6	18	p	86	222	1.50	2.00
+Cerium	Ce	6Lan	19	f	58	140.116	1.83	2.00
+Dysprosium	Dy	6Lan	19	f	66	162.500	1.75	2.00
+Erbium	Er	6Lan	19	f	68	167.260	1.73	2.00
+Europium	Eu	6Lan	19	f	63	151.964	1.99	2.00
+Gadolinium	Gd	6Lan	19	f	64	157.250	1.79	2.00
+Holmium	Ho	6Lan	19	f	67	164.930	1.74	2.00
+Lanthanum	La	6Lan	19	f	57	138.906	1.87	2.00
+Neodymium	Nd	6Lan	19	f	60	144.240	1.81	2.00
+Promethium	Pm	6Lan	19	f	61	145	1.80	2.00
+Praseodymium	Pr	6Lan	19	f	59	140.908	1.82	2.00
+Samarium	Sm	6Lan	19	f	62	150.360	1.80	2.00
+Terbium	Tb	6Lan	19	f	65	158.925	1.76	2.00
+Thulium	Tm	6Lan	19	f	69	168.934	1.72	2.00
+Ytterbium	Yb	6Lan	19	f	70	173.040	1.94	2.00
+Francium	Fr	7	1	s	87	223	1.50	2.00
+Radium	Ra	7	2	s	88	226	1.90	2.00
+Lawrencium	Lr	7	3	d	103	262	1.50	2.00
+Rutherfordium	Rf	7	4	d	104	261	1.50	2.00
+Dubnium	Db	7	5	d	105	262	1.50	2.00
+Seaborgium	Sg	7	6	d	106	266	1.50	2.00
+Bohrium	Bh	7	7	d	107	264	1.50	2.00
+Hassium	Hs	7	8	d	108	269	1.50	2.00
+Meitnerium	Mt	7	9	d	109	268	1.50	2.00
+Darmstadtium	Ds	7	10	d	110	271	1.50	2.00
+Actinium	Ac	7Act	20	f	89	227	1.88	2.00
+Americium	Am	7Act	20	f	95	243	1.51	2.00
+Berkelium	Bk	7Act	20	f	97	247	1.54	2.00
+Californium	Cf	7Act	20	f	98	251	1.83	2.00
+Curium	Cm	7Act	20	f	96	247	0.99	2.00
+Einsteinium	Es	7Act	20	f	99	252	1.50	2.00
+Fermium	Fm	7Act	20	f	100	257	1.50	2.00
+Mendelevium	Md	7Act	20	f	101	258	1.50	2.00
+Nobelium	No	7Act	20	f	102	259	1.50	2.00
+Neptunium	Np	7Act	20	f	93	237	1.55	2.00
+Protactinium	Pa	7Act	20	f	91	231.036	1.61	2.00
+Plutonium	Pu	7Act	20	f	94	244	1.53	2.00
+Thorium	Th	7Act	20	f	90	232.038	1.79	2.00
+Uranium	U	7Act	20	f	92	238.029	1.58	1.86
