#number name 		symbol	mass
1 	Hydrogen 	H 	1.00794
2 	Helium 		He 	4.002602
3 	Lithium 	Li 	6.941
4 	Beryllium 	Be 	9.012182
5 	Boron   	B 	10.811
6 	Carbon  	C 	12.0107
7 	Nitrogen 	N 	14.0067
8 	Oxygen  	O 	15.9994
9 	Fluorine 	F 	18.9984032
10 	Neon    	Ne 	20.1797
11 	Sodium	 	Na 	22.98976928
12 	Magnesium 	Mg 	24.3050
13 	Aluminium  	Al 	26.9815386
14 	Silicon 	Si 	28.0855
15 	Phosphorus 	P 	30.973762
16 	Sulfur  	S 	32.065
17 	Chlorine 	Cl 	35.453
18 	Argon   	Ar 	39.948
19 	Potassium  	K 	39.0983
20 	Calcium 	Ca 	40.078
21 	Scandium 	Sc 	44.955912
22 	Titanium 	Ti 	47.867
23 	Vanadium 	V 	50.9415
24 	Chromium 	Cr 	51.9961
25 	Manganese 	Mn 	54.938045
26 	Iron    	Fe 	55.845
27 	Cobalt  	Co 	58.933195
28 	Nickel  	Ni 	58.6934
29 	Copper  	Cu 	63.546
30 	Zinc    	Zn 	65.409
31 	Gallium 	Ga 	69.723
32 	Germanium 	Ge 	72.64
33 	Arsenic 	As 	74.92160
34 	Selenium 	Se 	78.96
35 	Bromine 	Br 	79.904
36 	Krypton 	Kr 	83.798
37 	Rubidium 	Rb 	85.4678
38 	Strontium 	Sr 	87.62
39 	Yttrium 	Y 	88.90585
40 	Zirconium 	Zr 	91.224
41 	Niobium 	Nb 	92.906 38
42 	Molybdenum 	Mo 	95.94
43 	Technetium 	Tc 	98
44 	Ruthenium 	Ru 	101.07
45 	Rhodium 	Rh 	102.905 50
46 	Palladium 	Pd 	106.42
47 	Silver  	Ag 	28.0855
48 	Cadmium 	Cd 	112.411
49 	Indium  	In 	114.818
50 	Tin     	Sn 	118.710
51 	Antimony  	Sb 	121.760
52 	Tellurium 	Te 	127.60
53 	Iodine  	I 	126.904 47
54 	Xenon   	Xe 	131.293
55 	Caesium   	Cs 	132.9054519
56 	Barium  	Ba 	137.327
57 	Lanthanum 	La 	138.90547
58 	Cerium  	Ce 	140.116
59 	Praseodymium 	Pr 	140.90765
60 	Neodymium 	Nd 	144.242
61 	Promethium 	Pm 	145
62 	Samarium 	Sm 	150.36
63 	Europium 	Eu 	151.964
64 	Gadolinium 	Gd 	157.25
65 	Terbium 	Tb 	158.92535
66 	Dysprosium 	Dy 	162.500
67 	Holmium 	Ho 	164.930 32
68 	Erbium  	Er 	167.259
69 	Thulium 	Tm 	168.93421
70 	Ytterbium 	Yb 	173.04
71 	Lutetium 	Lu 	174.967
72 	Hafnium 	Hf 	178.49
73 	Tantalum 	Ta 	180.94788
74 	Tungsten  	W 	183.84
75 	Rhenium 	Re 	186.207
76 	Osmium  	Os 	190.23
77 	Iridium 	Ir 	192.217
78 	Platinum 	Pt 	195.084
79 	Gold    	Au 	196.966569
80 	Mercury 	Hg 	200.59
81 	Thallium 	Tl 	204.3833
82 	Lead    	Pb 	207.2
83 	Bismuth 	Bi 	208.98040
84 	Polonium 	Po 	210
85 	Astatine 	At 	210
86 	Radon   	Rn 	220
87 	Francium 	Fr 	223
88 	Radium  	Ra 	226
89 	Actinium 	Ac 	227
91 	Protactinium 	Pa 	231.03588
90 	Thorium 	Th 	232.03806
93 	Neptunium 	Np 	237
92 	Uranium 	U 	238.02891
95 	Americium 	Am 	243
94 	Plutonium 	Pu 	244
96 	Curium  	Cm 	247
97 	Berkelium 	Bk 	247
98 	Californium 	Cf 	251
99 	Einsteinium 	Es 	252
100 	Fermium 	Fm 	257
101 	Mendelevium 	Md 	258
102 	Nobelium 	No 	259
103 	Lawrencium 	Lr 	262
104 	Rutherfordium 	Rf 	261
105 	Dubnium 	Db 	262
106 	Seaborgium 	Sg 	266
107 	Bohrium 	Bh 	264
108 	Hassium 	Hs 	277
109 	Meitnerium 	Mt 	268
110 	Darmstadtium 	Ds 	271
111 	Roentgenium 	Rg 	272
112 	Ununbium 	Uub 	285
113 	Ununtrium 	Uut 	284
114 	Ununquadium 	Uuq 	289
115 	Ununpentium 	Uup 	288
116 	Ununhexium 	Uuh 	292