Periodic Table of Elements
Interactive reference of chemical elements
H
#1 •1.01
He
#2 •4.00
Li
#3 •6.94
Be
#4 •9.01
B
#5 •10.81
C
#6 •12.01
N
#7 •14.01
O
#8 •16.00
F
#9 •19.00
Ne
#10 •20.18
Na
#11 •22.99
Mg
#12 •24.30
Al
#13 •26.98
Si
#14 •28.09
P
#15 •30.97
S
#16 •32.06
Cl
#17 •35.45
Ar
#18 •39.95
K
#19 •39.10
Ca
#20 •40.08
Sc
#21 •44.96
Ti
#22 •47.87
V
#23 •50.94
Cr
#24 •52.00
Mn
#25 •54.94
Fe
#26 •55.84
Co
#27 •58.93
Ni
#28 •58.69
Cu
#29 •63.55
Zn
#30 •65.38
Ga
#31 •69.72
Ge
#32 •72.63
As
#33 •74.92
Se
#34 •78.97
Br
#35 •79.90
Kr
#36 •83.80
Rb
#37 •85.47
Sr
#38 •87.62
Y
#39 •88.91
Zr
#40 •91.22
Nb
#41 •92.91
Mo
#42 •95.95
Tc
#43 •98.00
Ru
#44 •101.07
Rh
#45 •102.91
Pd
#46 •106.42
Ag
#47 •107.87
Cd
#48 •112.41
In
#49 •114.82
Sn
#50 •118.71
Sb
#51 •121.76
Te
#52 •127.60
I
#53 •126.90
Xe
#54 •131.29
Cs
#55 •132.91
Ba
#56 •137.33
La
#57 •138.91
Ce
#58 •140.12
Pr
#59 •140.91
Nd
#60 •144.24
Pm
#61 •145.00
Sm
#62 •150.36
Eu
#63 •151.96
Gd
#64 •157.25
Tb
#65 •158.93
Dy
#66 •162.50
Ho
#67 •164.93
Er
#68 •167.26
Tm
#69 •168.93
Yb
#70 •173.05
Lu
#71 •174.97
Hf
#72 •178.49
Ta
#73 •180.95
W
#74 •183.84
Re
#75 •186.21
Os
#76 •190.23
Ir
#77 •192.22
Pt
#78 •195.08
Au
#79 •196.97
Hg
#80 •200.59
Tl
#81 •204.38
Pb
#82 •207.20
Bi
#83 •208.98
Po
#84 •209.00
At
#85 •210.00
Rn
#86 •222.00
Fr
#87 •223.00
Ra
#88 •226.00
Ac
#89 •227.00
Th
#90 •232.04
Pa
#91 •231.04
U
#92 •238.03
Np
#93 •237.00
Pu
#94 •244.00
Am
#95 •243.00
Cm
#96 •247.00
Bk
#97 •247.00
Cf
#98 •251.00
Es
#99 •252.00
Fm
#100 •257.00
Md
#101 •258.00
No
#102 •259.00
Lr
#103 •262.00
1
H
1.01
2
He
4.00
3
Li
6.94
4
Be
9.01
5
B
10.81
6
C
12.01
7
N
14.01
8
O
16.00
9
F
19.00
10
Ne
20.18
11
Na
22.99
12
Mg
24.30
13
Al
26.98
14
Si
28.09
15
P
30.97
16
S
32.06
17
Cl
35.45
18
Ar
39.95
19
K
39.10
20
Ca
40.08
21
Sc
44.96
22
Ti
47.87
23
V
50.94
24
Cr
52.00
25
Mn
54.94
26
Fe
55.84
27
Co
58.93
28
Ni
58.69
29
Cu
63.55
30
Zn
65.38
31
Ga
69.72
32
Ge
72.63
33
As
74.92
34
Se
78.97
35
Br
79.90
36
Kr
83.80
37
Rb
85.47
38
Sr
87.62
39
Y
88.91
40
Zr
91.22
41
Nb
92.91
42
Mo
95.95
43
Tc
98.00
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
127.60
53
I
126.90
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
145.00
62
Sm
150.36
63
Eu
151.96
64
Gd
157.25
65
Tb
158.93
66
Dy
162.50
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
207.20
83
Bi
208.98
84
Po
209.00
85
At
210.00
86
Rn
222.00
87
Fr
223.00
88
Ra
226.00
89
Ac
227.00
90
Th
232.04
91
Pa
231.04
92
U
238.03
93
Np
237.00
94
Pu
244.00
95
Am
243.00
96
Cm
247.00
97
Bk
247.00
98
Cf
251.00
99
Es
252.00
100
Fm
257.00
101
Md
258.00
102
No
259.00
103
Lr
262.00