Hydrogen
H
1
1.00794
0
1
1
Helium
He
2
4.002602
2
2
2
Lithium
Li
3
6.941
4
3
3
Beryllium
Be
4
9.01218
5
4
4
Boron
B
5
10.811
6
5
5
Carbon
C
6
12.011
6
6
6
Nitrogen
N
7
14.00674
7
7
7
Oxygen
O
8
15.9994
8
8
8
Fluorine
F
9
18.998403
10
9
9
Neon
Ne
10
20.1797
10
10
10
Sodium
Na
11
22.989768
12
11
11
Magnesium
Mg
12
24.305
12
12
12
Aluminum
Al
13
26.981539
14
13
13
Silicon
Si
14
28.0855
14
14
14
Phosphorus
P
15
30.973762
16
15
15
Sulfur
S
16
32.066
16
16
16
Chlorine
Cl
17
35.4527
18
17
17
Argon
Ar
18
39.948
22
18
18
Potassium
K
19
39.0983
20
19
19
Calcium
Ca
20
40.078
20
20
20
Scandium
Sc
21
44.95591
24
21
21
Titanium
Ti
22
47.88
26
22
22
Vanadium
V
23
50.9415
28
23
23
Chromium
Cr
24
51.9961
28
24
24
Manganese
Mn
25
54.93805
30
25
25
Iron
Fe
26
55.847
30
26
26
Cobalt
Co
27
58.9332
32
27
27
Nickel
Ni
28
58.6934
31
28
28
Copper
Cu
29
63.546
35
29
29
Zinc
Zn
30
65.39
35
30
30
Gallium
Ga
31
69.723
39
31
31
Germanium
Ge
32
72.61
41
32
32
Arsenic
As
33
74.92159
42
33
33
Selenium
Se
34
78.96
45
34
34
Bromine
Br
35
79.904
45
35
35
Krypton
Kr
36
83.8
48
36
36
Rubidium
Rb
37
85.4678
48
37
37
Strontium
Sr
38
87.62
50
38
38
Yttrium
Y
39
88.90585
50
39
39
Zirconium
Zr
40
91.224
51
40
40
Niobium
Nb
41
92.90638
52
41
41
Molybdenum
Mo
42
95.94
54
42
42
Technetium
Tc
43
97.9072
55
43
43
Ruthenium
Ru
44
101.07
57
44
44
Rhodium
Rh
45
102.9055
58
45
45
Palladium
Pd
46
106.42
60
46
46
Silver
Ag
47
107.8682
61
47
47
Cadmium
Cd
48
112.411
64
48
48
Indium
In
49
114.818
66
49
49
Tin
Sn
50
118.71
69
50
50
Antimony
Sb
51
121.76
71
51
51
Tellurium
Te
52
127.6
76
52
52
Iodine
I
53
126.90447
74
53
53
Xenon
Xe
54
131.29
77
54
54
Cesium
Cs
55
132.90543
78
55
55
Barium
Ba
56
137.327
81
56
56
Lanthanum
La
57
138.9055
82
57
57
Cerium
Ce
58
140.115
82
58
58
Praseodymium
Pr
59
140.90765
82
59
59
Neodymium
Nd
60
144.24
84
60
60
Promethium
Pm
61
144.9127
84
61
61
Samarium
Sm
62
150.36
88
62
62
Europium
Eu
63
151.965
89
63
63
Gadolinium
Gd
64
157.25
93
64
64
Terbium
Tb
65
158.92534
94
65
65
Dysprosium
Dy
66
162.5
97
66
66
Holmium
Ho
67
164.93032
98
67
67
Erbium
Er
68
167.26
99
68
68
Thulium
Tm
69
168.93421
100
69
69
Ytterbium
Yb
70
173.04
103
70
70
Lutetium
Lu
71
174.967
104
71
71
Hafnium
Hf
72
178.49
106
72
72
Tantalum
Ta
73
180.9479
108
73
73
Tungsten
W
74
183.84
110
74
74
Rhenium
Re
75
186.207
111
75
75
Osmium
Os
76
190.23
114
76
76
Iridium
Ir
77
192.22
115
77
77
Platinum
Pt
78
195.08
117
78
78
Gold
Au
79
196.96654
118
79
79
Mercury
Hg
80
200.59
121
80
80
Thallium
Tl
81
204.3833
123
81
81
Lead
Pb
82
207.2
125
82
82
Bismuth
Bi
83
208.98037
126
83
83
Polonium
Po
84
208.9824
125
84
84
Astatine
At
85
209.9871
125
85
85
Radon
Rn
86
222.0176
136
86
86
Francium
Fr
87
223.0197
136
87
87
Radium
Ra
88
226.0254
138
88
88
Actinium
Ac
89
227.0278
138
89
89
Thorium
Th
90
232.0381
142
90
90
Protactinium
Pa
91
231.03588
140
91
91
Uranium
U
92
238.0289
146
92
92
Neptunium
Np
93
237.048
144
93
93
Plutonium
Pu
94
244.0642
150
94
94
Americium
Am
95
243.0614
148
95
95
Curium
Cm
96
247.0703
151
96
96
Berkelium
Bk
97
247.0703
150
97
97
Californium
Cf
98
251.0796
153
98
98
Einsteinium
Es
99
252.083
153
99
99
Fermium
Fm
100
257.0951
157
100
100
Mendelevium
Md
101
258.1
157
101
101
Nobelium
No
102
259.1009
157
102
102
Lawrencium
Lr
103
262.11
159
103
103
Rutherfordium
Rf
104
261
157
104
104
Dubnium
Db
105
262
157
105
105
Seaborgium
Sg
106
266
160
106
106
Bohrium
Bh
107
264
157
107
107
Hassium
Hs
108
269
161
108
108
Meitnerium
Mt
109
268
159
109
109
Ununnilium
Uun
110
269
159
110
110
Unununium
Uuu
111
272
161
111
111
Ununbium
Uub
112
277
165
112
112
Ununtrium
Uut
113
284
171
113
113
Ununquadium
Uuq
114
289
175
114
114
Ununpentium
Uup
115
288
173
115
115
Ununhexium
Uuh
116
293
177
116
116
Ununseptium
Uus
117
294
177
117
117
Ununoctium
Uuo
118
294
176
118
118