Please Choose an Element


1
H
1
4
He
2
7
Li
3
9
Be
4
11
B
5
12
C
6
14
N
7
16
O
8
19
F
9
20
Ne
10
23
Na
11
24
Mg
12
27
Al
13
28
Si
14
31
P
15
32
S
16
35.5
Cl
17
40
Ar
18
39
K
19
40
Ca
20
45
Sc
21
48
Ti
22
51
V
23
52
Cr
24
55
Mn
25
56
Fe
26
59
Co
27
59
Ni
28
63.5
Cu
29
65
Zn
30
70
Ga
31
73
Ge
32
75
As
33
79
Se
34
80
Br
35
84
Kr
36
85
Rb
37
88
Sr
38
89
Y
39
91
Zr
40
93
Nb
41
96
Mo
42
[98]
Tc
43
101
Ru
44
103
Rh
45
106
Pd
46
108
Ag
47
112
Cd
48
115
In
49
119
Sn
50
122
Sb
51
128
Te
52
127
I
53
131
Xe
54
133
Cs
55
137
Ba
56
175
Lu
71
178
Hf
72
181
Ta
73
184
W
74
186
Re
75
190
Os
76
192
Ir
77
195
Pt
78
197
Au
79
201
Hg
80
204
Tl
81
207
Pb
82
209
Bi
83
[209]
Po
84
[210]
At
85
[222]
Rn
86
[223]
Fr
87
[226]
Ra
88
[266]
Lr
103
[261]
Rf
104
[262]
Db
105
[266]
Sg
106
[264]
Bh
107
[277]
Hs
108
[268]
Mt
109
[271]
Ds
110
[272]
Rg
111
[285]
Cn
112
[286]
Nh
113
[289]
Fl
114
[289]
Mc
115
[293]
Lv
116
[294]
Ts
117
[294]
Og
118
139
La
57
140
Ce
58
141
Pr
59
144
Nd
60
[145]
Pm
61
150
Sm
62
152
Eu
63
157
Gd
64
159
Tb
65
163
Dy
66
165
Ho
67
167
Er
68
169
Tm
69
173
Yb
70
[227]
Ac
89
232
Th
90
231
Pa
91
238
U
92
[237]
Np
93
[244]
Pu
94
[243]
Am
95
[247]
Cm
96
[247]
Bk
97
[251]
Cf
98
[252]
Es
99
[257]
Fm
100
[258]
Md
101
[259]
No
102