page1
Atomic Number
†
Atomic Weight
Symbol
†
Ground-State Level
*Electronegativity (Pauling)
Name
*Density
[Note]
†
Ionization Energy (eV)
*Melting Point (°C)
*Boiling Point (°C)
Atomic radius (pm)
[Note]
Crystal Structure
[Note]
†
Electron Configuration
Possible Oxidation States
[Note]
Phase at STP
†
Common Constants
Source: physics.nist.gov
Absolute Zero
-273.15 °C
Gravitation Constant
6.67428x10
-11
m
3
kg
-1
s
-2
Atomic Mass Unit
1.660539x10
-27
kg
Molar Gas Constant
8.314472 J mol
-1
K
-1
Avogadro Constant
6.022142x10
23
mol
-1
Molar Volume (Ideal Gas)
0.02241410 m
3
/mol
Base of Natural Logarithms
2.718281828
PI
3.14159265358979
Boltzmann constant
1.380650x10
-23
J/K
Planck Constant
6.626069x10
-34
J s
Electron Mass
9.10938215x10
-31
kg
Proton-Electron Mass Ratio
1836.15267
389
0.5110 MeV
Rydberg Constant
10 973 732 m
-1
Electron Radius (Classical)
2.8179403x10
-15
m
3.289842x10
15
Hz
Electron Volt
1.602176x10
-19
J
13.6057 eV
Elementry Charge
1.602176x10
-19
C
Second Radiation Constant
0.01438769 m K
Faraday Constant
96 485.3399 C/mol
Speed of Light in a Vacuum
299 792 458 m/s
fine-structure constant
0.0072973525
Speed of sound in air at STP
343.2 m/s
[42]
First Radiation Constant
3.7417749x10
-16
W m
2
Standard Pressure
101 325 Pa
{42}
References:
†Nist.gov, *Wolfram.com (Mathematic),
CRC Handbook of Chemistry and Physics
81st Edition, 2000-2001, and others
-
-
(m) 170
hex
-
hex
[Rn] 5f
13
7s
2
[Rn] 5f
14
7s
2
[Rn] 5f
14
7s
2
7p
1
+3
+4
+4,5
+3,4,5,6
+3,4,5,6
+3,4,5,6
+3,4,5,6
+3
+2,3
+2,3
+3
+3,4
+3
+3
+3
-
-
-
-
-
-
-
-
[Rn] 6d
1
7s
2
[Rn] 6d
2
7s
2
[Rn] 5f
2
6d
1
7s
2
[Rn] 5f
3
6d
1
7s
2
[Rn] 5f
4
6d
1
7s
2
[Rn] 5f
6
7s
2
[Rn] 5f
9
7s
2
[Rn] 5f
10
7s
2
[Rn] 5f
11
7s
2
[Rn] 5f
12
7s
2
-
FCC
(m) 179
FCC
(m) 163
§tetra
(m) 156
BCP
(m) 173
HCP
(m) 174
HCP
(m) 155
SO
(m) 159
§mono.
[Rn] 5f
7
7s
2
[Rn] 5f
7
6d
7
s
2
-
4.9 ?
14.78
6.1979
15.1
6.2817
1050
-
900
-
1176
2011
1345
3110
827
-
827
-
860
-
1527
-
1627
-
-
6.58
-
6.65
-
6.42
-
6.50
1050
3200
1750
4820
1572
4000
644
4000
640
3230
10.07
5.17
11.724
6.3067
15.37
5.89
19.05
6.1941
-
5.9738
13.51
5.9914
20.45
6.2657
19.816
6.0260
1135
3927
Plutonium
Americium
Curium
Berkelium
2
P°
1/2
?
1.1
1.3
1.5
1.38
1.36
Californium
Einsteinium
Fermium
Mendelevium
-
Actinium
Thorium
Protactinium
Uranium
Neptunium
Nobelium
Lawrencium
9
D°
2
1
S
0
Lr
1.3
1.3
3
H
6
Md
1.3
1.28
1.3
1.3
1.3
2
F°
7/2
No
1.3
Es
1.3
4
I°
15/2
U
5
L°
6
101
(258)
102
(259)
99
(252)
100
(257)
Ac
2
D
3/2
Th
3
F
2
Pa
4
K
11/2
Np
6
L
11/2
Pu
7
F
0
97
(247)
98
(251)
Fm
Bk
6
H°
15/2
Cf
5
I
8
Am
8
S°
7/2
Cm
[Xe] 4f
14
6s
2
[Xe] 4f
14
5d
1
6s
2
+2,3
+2,3
+3
(227)
90
232.0381
91
231.0359
92
238.0289
95
(243)
96
(247)
93
(237)
94
(244)
103
(262)
[Xe] 5d
1
6s
2
[Xe] 4f
1
5d
1
6s
2
[Xe] 4f
3
6s
2
[Xe] 4f
4
6s
2
[Xe] 4f
5
6s
2
[Xe] 4f
6
6s
2
[Xe] 4f
7
6s
2
[Xe] 4f
7
5d
1
6s
2
[Xe] 4f
9
6s
2
+2,3
+3
[Xe] 4f
10
6s
2
[Xe] 4f
11
6s
2
[Xe] 4f
12
6s
2
[Xe] 4f
13
6s
2
+3
+3,4
+3,4
+3
+3
+2,3
+3,4
+3
+3
+3
3402
(m) 187
§hex
(m) 182
FCC
(m) 182
HCP
(m) 178
HCP
(m) 176
BCC
(m) 180
HCP
(m) 177
HCP
(m) 176
FCC
(m) 174
HCP
(m) 176
HCP
(m) 176
HCP
1196
1663
2700
1497
2868
1545
5.473
7.01
5.5250
7.264
§hex
(m) 181
§hex
(m) 183
1950
819
3230
1412
2567
1474
HCP
(m) 180
§hex
(m) 180
920
3464
798
3360
931
3290
1021
3100
1100
1527
1313
3250
1356
3000
1072
1803
822
Praseodymium Neodymium
Promethium
Samarium
5.582
7.353
5.6437
5.244
Lutetium
6.146
5.5769
6.689
5.5387
6.64
5.8638
8.551
5.9389
8.795
5.6704
7.901
6.1498
8.219
6.1843
6.57
6.2542
9.841
6.0215
9.066
6.1077
9.321
5.4259
Er
3
H
6
Tm
2
F°
7/2
1.24
1.25
Yb
1
S
0
Lu
2
D
3/2
-
1.27
Thulium
Ytterbium
Europium
Gadolinium
Terbium
Dysprosium
Holmium
Erbium
-
Sm
7
F
0
Eu
8
S°
7/2
1.17
-
Gd
9
D°
2
Tb
6
H°
15/2
1.20
-
Dy
5
I
8
Ho
4
I°
15/2
1.22
1.23
57
138.9055
La
2
D
3/2
1.10
Lanthanum
62
150.36
63
151.964
Actinides
89
58
140.116
Cerium
Lanthanides
66
64
157.25
65
158.92534
Ce
1
G°
4
Pr
4
I°
9/2
1.12
1.13
Nd
5
I
4
Pm
6
H°
5/2
1.14
59
140.90765
60
144.24
61
(145)
162.500
67
164.93032
70
173.04
71
174.967
68
167.259
69
168.93421
[Rn] 7s
1
[Rn] 7s
2
[Rn] 5f
14
6d
2
7s
2
[Rn] 5f
14
6d
3
7s
2
[Rn] 5f
14
6d
4
7s
2
[Rn] 5f
14
6d
5
7s
2
[Rn] 5f
14
6d
6
7s
2
[Rn] 5f
14
6d
7
7s
2
?
[Rn]5f
14
6d
10
7s
2
7p
2
?
[Rn]5f
14
6d
10
7s
2
7p
3
?
[Rn]5f
14
6d
10
7s
2
7p
4
?
[Rn]5f
14
6d
10
7s
2
7p
5
?
[Rn] 5f
14
6d
8
7s
2
?
[Rn] 5f
14
6d
9
7s
2
?
[Rn] 5f
14
6d
10
7s
2
?
[Rn]5f
14
6d
10
7s
2
7p
1
?
[Rn]5f
14
6d
10
7s
2
7p
6
?
-
-
-
BCC
-
-
700
1737
Dubnium
Seaborgium
Bohrium
Hassium
Og
0.7
0.9
Nihonium
Ununquadium
Moscovium
Livermorium
Meitnerium
Darmstadtium Roentgenium Copernicium
Tennessine
Oganesson
Bh
115
116
(292)
Hs
Mt
117
113
114
(289)
Lv
Ts
Nh
Uuq
Mc
Ds
Rg
107
(264)
108
(277)
105
(262)
106
(266)
111
(272)
112
(285)
109
(268)
110
(281)
118
7
87
(223)
88
Fr
2
S
1/2
Francium
(226)
Actinide
Series
104
(261)
Ra
1
S
0
Rf
3
F
2
?
Radium
Rutherfordium
-
4.0727
5
5.2784
6.0 ?
+1
+2
+4
+1
+2
+4
+5
+2,3,4,5,6
+2,4,6,7,-1
+2,3,4,6,8
+2,3,4,6
+2,4
+3,5
+2,4
+1,3,5,7,-1
0
+1,3
+1,2
+1,3
+2,4
[Xe] 6s
1
[Xe] 6s
2
[Xe] 4f
14
5d
2
6s
2
[Xe] 4f
14
5d
3
6s
2
[Xe] 4f
14
5d
4
6s
2
[Xe] 4f
14
5d
5
6s
2
[Xe] 4f
14
5d
6
6s
2
[Xe] 4f
14
5d
7
6s
2
[Hg] 6p
2
[Hg] 6p
3
[Hg] 6p
4
[Hg] 6p
5
[Xe] 4f
14
5d
9
6s
1
[Xe] 4f
14
5d
10
6s
1
[Xe] 4f
14
5d
10
6s
2
[Hg] 6p
1
[Hg] 6p
6
§rhom.
(m) 170
HCP
(m) 139
FCC
(m) 144
FCC
-
§cubic
-
-
(m) 175
FCC
(v) 146
§rhom.
(v) 145
-
(m) 265
BCC
(m) 222
BCC
(m) 159
HCP
(m) 146
BCC
(m) 135
HCP
(m) 136
FCC
(m) 139
BCC
(m) 137
HCP
(m) 151
356.73
304
1473
1768.3
3825
1064.18
2856
254
962
302
-
327.46
1749
271.3
1564
-71
-61.7
28.44
671
727
1870
2233
4603
3017
5458
3033
5012
2466
4428
3422
5555
3186
5596
-38.83
10.4375
11.85
6.1082
21.09
8.9588
19.3
9.2255
9.196
8.414
-
-
11.34
7.4167
9.78
7.2855
9.73
10.7485
13.31
6.8251
16.65
7.5496
1.879
3.8939
3.51
5.2117
22.61
8.4382
22.65
8.9670
19.25
7.8640
21.02
7.8335
13.534
Cesium
Barium
Hafnium
Tantalum
Tungsten
Rhenium
Osmium
Iridium
Platinum
Bismuth
Polonium
Astatine
Radon
Gold
Mercury
Thallium
Lead
Po
3
P
2
At
2
P°
3/2
2.0
2.2
Rn
1
S
0
0.79
0.89
1.3
1.5
2.36
1.9
2.2
2.2
-
3
D
3
Au
2
S
1/2
2.28
2.54
Hg
1
S
0
Tl
2
P°
1/2
2
1.62
Pb
3
P
0
Bi
4
S°
3/2
2.33
2.02
Hf
3
F
2
Ta
4
F
3/2
Cs
2
S
1/2
Ba
1
S
0
Os
5
D
4
Ir
4
F
9/2
W
5
D
0
Re
6
S
5/2
Pt
6
55
132.90545
56
137.327
Lanthanide Series
73
180.9479
74
183.84
+1,5,7,-1
0
77
192.217
78
195.078
75
186.207
76
190.23
81
204.3833
82
207.2
79
196.96655
80
200.59
85
(210)
86
(222)
+1
+2
+3
+4
+3,5
+2,3,4,5,6
+4,7
+2,3,4,6,8
72
178.49
+3
+2,4
+3,5,-3
+2,4,6,-2
+2,3,4
+2,4
+1
+2
83
208.98038
84
(209)
(v) 130
-
(v) 138
§rhom.
(v) 135
hex
[Kr] 4d
4
5s
1
[Kr] 4d
5
5s
1
[Kr] 4d
5
5s
2
[Kr] 4d
7
5s
1
[Kr] 5s
1
[Kr] 5s
2
[Kr] 4d
1
5s
2
[Kr] 4d
2
5s
2
[Kr] 4d
10
5s
2
5p
1
[Kr] 4d
10
5s
2
5p
2
[Kr] 4d
10
5s
2
5p
3
[Kr] 4d
10
5s
2
5p
4
[Kr] 4d
8
5s
1
[Kr] 4d
10
[Kr] 4d
10
5s
1
[Kr] 4d
10
5s
2
[Kr] 4d
10
5s
2
5p
5
[Kr] 4d
10
5s
2
5p
6
(m) 248
BCC
(m) 215
FCC
113.7
184.3
156.6
2072
231.93
2602
(m) 146
BCC
(m) 139
BCC
(m) 180
HCP
(m) 160
HCP
(m) 134
FCC
(m) 137
FCC
(m) 136
HCP
(m) 134
HCP
(m) 167
§tetra.
(v) 141
§tetra.
(m) 144
FCC
(m) 151
§hex
(v) 133
BCO
1526
3345
1855
4409
-111.8
-108
630.63
1587
449.51
988
6.511
6.6339
39.31
688
777
1382
2157
4265
2334
4150
2477
4744
2623
4639
961.78
2162
321.07
767
1964
3695
1554.9
2963
8.3369
11.5
7.28
12.37
7.3605
7.31
5.7864
7.31
7.3439
10.49
7.5762
8.65
8.9938
4.94
10.4513
5.9
12.1298
6.697
8.6084
6.24
9.0096
1.532
4.1771
2.63
5.6949
4.472
6.2173
8.57
6.7589
10.28
7.0924
Niobium
Molybdenum
Technetium
Ruthenium
12.45
7.4589
12.023
Xe
1
S
0
2.66
2.60
Rubidium
Strontium
Yttrium
Zirconium
0.82
0.95
1.22
1.33
Iodine
Xenon
2.20
Rh
4
F
9/2
Pd
1
S
0
2.28
2.20
Ag
2
S
1/2
Cd
Indium
Tin
Antimony
Tellurium
Rhodium
Palladium
Silver
Cadmium
107.8682
52
127.60
53
126.90447
50
118.710
51
121.760
Sb
4
S°
3/2
Te
3
P
2
2.05
2.10
I
2
P°
3/2
54
131.293
Rb
2
S
1/2
Sr
1
S
0
Y
2
D
3/2
Zr
3
F
2
Nb
6
D
1/2
Mo
7
S
3
1.60
2.16
Tc
6
S
5/2
Ru
5
F
5
1.9
1
S
0
1.93
1.69
In
2
P°
1/2
Sn
3
P
0
1.78
1.96
106.42
47
5
37
85.4678
38
87.62
39
88.90585
+2
+3
40
91.224
41
92.90638
+2,4,6,-2
+1,5,-1
+2,4
+3,5,-3
+2,3
+2,3
44
101.07
45
102.90550
42
95.94
43
(98)
48
112.411
49
114.818
46
+2,3,4,6,7
[Ar] 3d
10
4s
2
[Ar] 3d
10
4s
2
4p
1
[Ar] 3d
10
4s
2
4p
2
[Ar] 3d
10
4s
2
4p
3
[Ar] 3d
6
4s
2
[Ar] 3d
7
4s
2
[Ar] 3d
8
4s
2
[Ar] 3d
10
4s
1
+2,3
+1,2
[Ar] 3d
10
4s
2
4p
4
[Ar] 3d
10
4s
2
4p
5
[Ar] 3d
10
4s
2
4p
6
+1
+2
+3
+2,3,4
+2,3,4,5
0
(m) 128
rhom.
(v) 116
§hex
(v) 114
§BCO
(v) 122
§cubic
(v) 119
BCO
(v) 110
-
[Ar] 4s
1
[Ar] 4s
2
[Ar] 3d
1
4s
2
[Ar] 3d
2
4s
2
[Ar] 3d
3
4s
2
[Ar] 3d
5
4s
1
[Ar] 3d
5
4s
2
-7.3
59
-157.36
2820
817
614
221
-153.22
(m) 227
BCC
(m) 197
FCC
(m) 162
HCP
(m) 147
HCP
(m) 134
§cubic
(m) 126
BCC
(m) 125
BCC
(m) 128
BCC
(m) 127
FCC
(m) 134
§hex
(m) 135
HCP
(m) 124
FCC
11.8138
3.75
13.9996
5.727
9.7886
4.819
9.7524
3287
1910
3407
1907
1484
1541
2830
1668
2861
1495
2927
1455
2671
1246
2061
1538
907
29.76
2204
938.3
2913
1084.62
2927
419.53
685
8.9
7.8810
8.908
7.6398
7.47
7.4340
7.874
7.9024
5.904
5.9993
5.323
7.8994
8.92
7.7264
7.14
9.3942
3.12
0.82
1.00
1.36
1.54
1.63
1.66
1.55
2.96
3
Potassium
Calcium
Scandium
Titanium
Vanadium
Chromium
Manganese
Iron
Gallium
Germanium
Arsenic
Selenium
Cobalt
Nickel
Copper
Zinc
Bromine
Krypton
Ga
1.90
1.65
2
P°
1/2
3
P
0
4
S°
3/2
Se
3
P
2
Br
2.18
2.55
2
P°
3/2
Kr
79.904
36
83.798
33
74.92160
34
78.96
69.723
32
72.64
35
1
S
0
Co
1.83
Cr
7
S
3
Mn
6
S
5/2
4
F
9/2
Ge
Ni
3
F
4
Cu
1.88
1.91
2
S
1/2
Zn
1
S
0
As
1.81
2.01
29
63.546
30
65.409
4
19
39.0983
20
63.38
759
842
40.078
K
2
S
1/2
23
50.9415
24
51.9961
21
44.955910
22
47.867
4.507
3
F
2
V
4
F
3/2
Ca
1
S
0
Sc
2
D
3/2
Fe
5
D
4
6.8281
0.856
4.3407
1.55
6.1132
2.985
6.5615
6.11
6.7462
7.14
6.7665
+2,3,6
Ti
(v) 99
FCC
(v) 111
cubic
(v) 106
8
VIII
9
VIII
§
(v) 102
FCO
27
58.933200
28
58.6934
25
54.938049
26
55.845
31
-
(v) 97
-
[Ne] 3s
1
[Ne] 3s
2
[Ne] 3s
2
3p
1
[Ne] 3s
2
3p
2
[Ne] 3s
2
3p
3
[Ne] 3s
2
3p
4
[Ne] 3s
2
3p
5
[Ne] 3s
2
3p
6
+1
+2
+3
+2,4,-4
+3,4,5,-3
+2,4,6,-2
+1,3,5,7,-1
0
10
VIII
(m) 186
BCC
(m) 160
HCP
3
IIIB
4
IVB
5
VB
11
IB
12
IIB
(m) 143
6
VIB
7
VIIB
12.9676
1.784
15.7596
97.72
883
650
1090
2

hc
2
660.32
280.5
115.21
444.72
-101.5
2519
1414
2900
44.2
-34.04
-189.3
-185.8
0.968
5.1391
1.738
7.6462

2.7
10.4867
1.96
10.3600
3.214
5.9858
2.33
8.1517
1.823
2
P°
1/2
S
3
P
2
Cl
2
P°
3/2
2.58
3.16
Ar
1
S
0
0.93
1.31
e
ch/k
1.61
1.90
2.19
-
Sodium
Magnesium
F
c
Aluminum
Silicon
Phosphorus
Sulfur
Chlorine
Argon
3
11
22.989770
12
24.3050
r0
R
∞
c
18
39.948
15
30.97361
16
32.065
Na
2
S
1/2
Mg
1
S
0
17
35.453
13
26.981538
14
28.0855
Si
3
P
0
P
4
S°
3/2
eV
R
∞
hc
Al
[He] 2s
1
[He] 2s
2
m
e
m
p
/m
e
[He] 2s
2
2p
1
-
(v) 73
[He] 2s
2
2p
2
[He] 2s
2
2p
3
[He] 2s
2
2p
4
[He] 2s
2
2p
5
-
(v) 69
-
(v) 71
[He] 2s
2
2p
6
+1
+2
mec 2
R
∞
+3
+2,4,-4
+2,3,4,5,-2,-3
-2
-1
0
21.5645
180.54
1342
1287
2470
e
-246.08
(m) 152
BCC
(m) 112
HCP
k
h
(v) 82
-195.79
-218.3
rhom.
(v) 77
hex
(v) 75
-188.12
-248.59
-182.9
-219.6
4000
3550
-
0.535
5.3917
1.848
9.3227
2.46
8.2980
2.26

2075
13.6181
1.696
17.4228
0.9
11.2603
1.251
14.5341
1.429
4027
-210.1
2.55
4
S°
3/2
O
2
P°
3/2
Ne
1
S
0
0.98
1.57
Gas
Liquid
Solid
Synthetic
3.98
-
Lithium
Beryllium
m
u
R
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon
0
9.012182
5
10.811
6
2
3
6.941
4
15.9994
9
18.9984032
10
12.0107
7
14.0067
8
20.1797
2
S
1/2
Be
1
S
0
B
G
2
P°
1/2
C
3
P
0
N
3
P
2
F
3.04
3.44
2.04
Period
1
1
1.00794
0.0899
13.5984
He
1
S
0
2.2
2.2
-
H
2
S
1/2
H
2
S
1/2
Hydrogen
Hydrogen
Helium
2
IIA
0.0899
13.5984
(v) 37
FCC
+1,-1
-268.93
-259.14
-252.87
-
(v) 32
13
IIIA
14
IVA
15
VA
18
VIIIA
Notes:
- Density units are g/cm
3
for solids and g/L or kg/cm
3
at
0° Celsius for gases
- Atomic Weight based on
12
C
- ( ) indicate mass number of most stable isotope
- Common Oxidation States in bold
- Electron Config. based on IUPAC guidelines
- § indicates crystal structure is unusual or may require
explanation
- (m) Metallic radius, (v) Covalent radius
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Cn
Periodic Table of the Elements
Db
Sg
(v) 37
-
+1,-1
Li
Periodic Table of the Elements
GROUP 1
IA
1
1.00794
2
4.002602
16
VIA
-
1s
1
1s
1
1s
2
17
VIIA
0.1785
24.5874
-259.14
-252.87