Справочник элементов

atomic_number	element	weight
1	H	1.008
2	He	4.0026
3	Li	6.94
4	Be	9.0122
5	B	10.81
6	C	12.011
7	N	14.007
8	O	15.999
9	F	18.998
10	Ne	20.18
11	Na	22.99
12	Mg	24.305
13	Al	26.982
14	Si	28.085
15	P	30.974
16	S	32.06
17	Cl	35.45
18	Ar	39.948
19	K	39.098
20	Ca	40.078
21	Sc	44.956
22	Ti	47.867
23	V	50.942
24	Cr	51.996
25	Mn	54.938
26	Fe	55.845
27	Co	58.933
28	Ni	58.693
29	Cu	63.546
30	Zn	65.38
31	Ga	69.723
32	Ge	72.63
33	As	74.922
34	Se	78.96
35	Br	79.904
36	Kr	83.798
37	Rb	85.468
38	Sr	87.62
39	Y	88.906
40	Zr	91.224
41	Nb	92.906
42	Mo	95.96
43	Tc
44	Ru	101.07
45	Rh	102.91
46	Pd	106.42
47	Ag	107.87
48	Cd	112.41
49	In	114.82
50	Sn	118.71
51	Sb	121.76
52	Te	127.6
53	I	126.9
54	Xe	131.29
55	Cs	132.91
56	Ba	137.33
57	La	138.91
58	Ce	140.12
59	Pr	140.91
60	Nd	144.24
61	Pm
62	Sm	150.36
63	Eu	151.96
64	Gd	157.25
65	Tb	158.93
66	Dy	162.5
67	Ho	164.93
68	Er	167.26
69	Tm	168.93
70	Yb	173.05
71	Lu	174.97
72	Hf	178.49
73	Ta	180.95
74	W	183.84
75	Re	186.21
76	Os	190.23
77	Ir	192.22
78	Pt	195.08
79	Au	196.97
80	Hg	200.59
81	Tl	204.38
82	Pb	207.2
83	Bi	208.98
84	Po
85	At
86	Rn
87	Fr
88	Ra
89	Ac
90	Th	232.04
91	Pa	231.04
92	U	238.03
93	Np
94	Pu
95	Am
96	Cm
97	Bk
98	Cf
99	Es
100	Fm
101	Md
102	No
103	Lr
104	Rf
105	Db
106	Sg
107	Bh
108	Hs
109	Mt
110	Ds
111	Rg
112	Cn
113	Uut
114	Fl
115	Uup
116	Lv
117	Uus
118	Uuo