THE PERIODIC TABLE OF THE ELEMENTS
2.
1
4
9
HYDROGEN
5
6
KEY
2 . 20
H
0. 2 5
3
7
8
9
10
11
12
13
14
15
16
17
18
GROUPS OF ELEMENTS
Atomic (proton) Number
He
helium
2
1.0
200.592
3
19.
10
2
07
1
3.5
8
11 .
9. 4
27
Pb
207.210
3
11 .
Bi
6.
-
-
18
Ar
0 .7 1
80
0. 88
1.15
Br
962
30
Po
4.
93
0
9. 2
.1
1. 0 8
xenon
131.294
At
5. 9
70
71
85
astatine
(208.982)
-10
8
54
- 61
.0 0
86
.7
113
Cn
Uut
(285.000)
(284.000)
copernicum
(280.000)
114
Ununtrium
115
Fl
Uup
(289.000)
(288.000)
flerovium
116
0
Rn
(222.018)
10
0 .1
117
9.7
37
118
Lv
Uus
Uuo
(293.000)
(294.000)
(294.000)
Livermorium
ununpentium
ununseptium
ununoctium
.1
0
4.5
20
.2
0
(244.064)
1. 4
19.
81
260
7
(243.061)
6.4
12
.0
3.4
0
7. 9
311
40
0
curium
(247.070)
8 .1
13
.5
1
5.8
8. 2
6 .0
Bk
(247.070)
8.0
13
.2
5
3.0
8.5
0.0
Cf
(251.080)
6 .1
15
.1
0
1.0
8 .7
0.0
Es
einsteinium
61
252.083
9. 4
8.8
4
9. 3
9. 0
7
Fm
(257.095)
7. 2
0
82
69
thulium
168.934
6 .7
82
100
17 3
45
Tm
59
27
fermium
62
15
167.259
15
99
Er
erbium
58
9
8
68
9. 3
7.0
Md
mendelevium
63
(258.098)
4.9
16
Yb
173.054
3.4
82
101
6
70
Ytterbium
60
2
119
4 .0
6.5
(259.101)
1.6
2
71
Lu
174.967
3.5
16
102
nobelium
64
7
340
52
Lutetium
52
7.0
No
1 .7 5
Ho
286
29
1 .7 5
15
164.930
86
98
0
67
holmium
58
5
californium
60
1 .7 5
Dy
260
61
1 .7 5
14
1 .7 5
7
66
162.500
90
97
256
07
Dysprosium
57
2
berkelium
59
1 .7 5
Tb
158.925
98
96
14
terbium
56
0
Cm
57
1 .7 5
1. 8 0
157.253
13
95
americium
57
59
4
Am
1 .7 5
Pu
plutonium
58
1. 8 5
1. 8 5
1 .7 5
1. 8 5
60
76
11
8
94
5. 2
7.1
gadolinium
3
65
1. 2 7
19
neptunium
(237.048)
322
9. 4
5
Gd
3 12
56
1. 3 0
7. 6
63
93
7. 3
54
13
1.10
59
Np
0
4.5
europium
151.964
0
64
1. 3 0
7
400
.0
6
Eu
300
12
1. 2 5
.3
U
uranium
(238.029)
44
7. 2
54
150.362
13
1. 3 0
15
1
92
8.6
samarium
9
63
1. 2 4
8.3
1
Sm
15 2
6 .0
1. 3 0
56
(231.036)
53
(144.000)
82
1. 3 0
Pa
protactinium
413
5
prometheum
0
62
1. 2 3
3
11
7
91
7. 0
Pm
19 0
72
1. 2 2
72
3 .1
10
1. 3 0
11 .
144.242
0
61
1.10
8.5
4 02
68
Neodymium
53
0
Nd
300
42
1. 2 8
thorium
6.4
10
1. 2 0
1. 9 5
112
ROENTGENIUM
(281.000)
1.13
Th
60
Ds
Darmstadtium
1. 2 0
7
15
90
(232.038)
8 .1
4
60
1. 2 8
.0
8
Pr
140.908
307
24
1. 3 6
10
47 8
5
9
10
1. 3 8
8.8
6.6
0
59
1. 5 0
actinium
49
4.4
3 13
5 .0
praseodymium
52
1. 3 0
1.10
Ac
(227.028)
93
140.116
5
17
8
89
111
Rg
110
meitnerium
1.17
3 19
50
5
109
hassium
1.13
10
6 .1
Ce
Cerium
53
(268.139)
bohrium
1.14
8 .1
3
58
1.13
53
138.905
344
5 .0
1.12
La
lanthanum
Mt
(277.000)
108
9. 8
4
27
103
Lr
Lawrencium
47
(262.110)
2.8
NOTES: For elements with more than one allotrope, the properties of the most common allotrope are given. Different allotropes may have differing melting points, boiling points, and densities. The discoveries of elements 113, 115, 117 & 118 have yet to be confirmed, and as such their names and symbols are only placeholders until official names are designated.
C
© COMPOUND INTEREST 2014 - WWW.COMPOUNDCHEM.COM
0
radon
(209.987)
8.9
79
1.10
1. 9 5
4
57
Hs
(264.120)
seaborgium
6
346
0.0
Bh
(266.122)
107
1 .7 5
0
dubnium
1. 8 5
57
92
Db
(262.114)
1. 8 5
5. 5
Rf
(261.109)
Rutherfordium
1 .7 5
E89-103
1. 8 0
Ra
(226.025)
106
Sg
105
5
Xe
11
94
3 37
.0
2 .0
3 .7
1. 8
11
.3
I
1. 4 0
.0
.4
Kr
51
-
18 4
53
08
36
krypton
13
2
iodine
10
-15
3
7. 4
8
83.798
3 .1
40
24
1.7
21
15
35
.7
.8
argon
126.904
84
2 .1
0. 38
1. 0 0
1. 0 0
Te
4 .0
58.
00
3
11
.0
polonium
81
8
9.7
2
127.603
25
208.980
988
9. 3
3.
bromine
11
52
1. 4 0
4
83
3.0
0. 50
-
15 6
1. 5
Bismuth
70
4
6.
51
-18
5
9. 3
0
39.948
15
21
-
0.6
18
0. 9
81
79.904
4.8
9. 5
4
Cl
78.971
1.0
.0
17
3
7.
.0
tellurium
86
69
685
Se
1.15
1.15
121.760
1.
34
44
Sb
1. 4 5
9
82
5.6
0.60
0.65
174
7. 5
lead
71
5
7.
5
51
antimony
83
31
16 3
0.6
3
-34
1. 5
chlorine
12
96
selenium
94
0
35.453
9.6
1.0
neon
1. 2 0
Tl
204.383
1. 0 0
1.10
9
1. 2 5
32
81
Thallium
58
3
3
118.711
5.7
S
1. 9 0
Hg
14 7
4 .0
Sn
8.6
4.5
1. 6 0
30
7.
74.922
63
Tin
70
31
2
50
1. 4 5
1. 5 5
.7
80
Mercury
196.967
0 .1
356
.83
8.3
1. 9 0
1. 5 0
1. 3 5
Au
1. 3 0
1. 3 5
1. 5 5
1. 6 0
1. 4 0
1. 3 5
1. 3 5
1. 3 5
1. 3 5
1. 3 5
1. 4 0
1. 3 0
1. 3 5
1. 3 5
1. 3 5
1. 3 0
1. 4 0
1. 4 0
1. 4 5
1. 4 5
1. 4 5
38
gold
89
9
0
79
8.
In
114.818
260
1. 9
1. 8 0
-
1. 3 5
1. 4 0
1. 5 5
1. 5 5
1. 3 5
4.4
297
64
7. 8
0 .7 0
0. 85
1. 2 5
1. 5 0
8
1. 8 0
2 .0 0
2 .15
Pt
195.084
.
23
Indium
55
65
2
49
arsenic
94
2
5. 3
As
10
32.065
22
Ne
2 .60
10
10
112.414
207
6 .6
2.2
.0
.6
16
0
20.180
20
1.7
81
6.
10
3 .0 0
5
78
Platinum
86
5
382
8
1.0
Cd
Cadmium
86
49
15
48
0
5. 9
72.640
61 4
33
3
sulfur
99
82
444
. 30
16
-2 4
8 .6
24
2 . 20
2
2.6
.
107.868
767
.0
1.1
8.8
Ge
germanium
76
1.
7.0
81
3
32
F
fluorine
2 .0 0
Ir
192.217
12
Ag
4
7.1
6.4
32
57
95
.1
2 .6 6
6
17
0
77
5. 2
4.4
0
47
SILVER
73
02
2
Gallium
69.723
283
.3
12
9
18.998
1. 4
14
-18
8
9 .7
2 .96
413
46
iridium
86
1
.
106.421
90
Ga
38
2.
O
21
2 .10
2 .6
12
Pd
2 21
1. 8
zinc
65.382
0
31
P
PHOSPHORUS
10
.0
2 . 55
2
9.7
96
Palladium
80
45
3
46
8.9
Zn
240
.7 6
277
.0
15
2 .02
190.233
4.2
Rhodium
24
Os
Rh
296
55
5.5
29
30
5
30.974
33
8
oxygen
13
2 .0 5
2
76
15
63.546
9 07
.0
9. 5
Si
-18
3
8.8
15.999
1. 2
.15
28.086
6.5
21
2 .18
501
33
osmium
81
2
.
5
45
Cu
Copper
74
1
8.9
7.1
41
2.
.8
N
02
44
silicon
78
70
5
2 . 33
2
1. 0
12
0
2
29
26.982
326
14
1. 9 6
186.207
5.8
0. 2
73
102.906
71
37
369
64
Nickel
58.693
Al
Aluminium
7
NITROGEN
14
6
2.2
14
-19
5
0.0
14.007
2 .01
Re
Ru
101.072
30
Rhenium
75
5
6
75
19
44
8.9
Ni
256
85
C
87
14
1. 6 2
2
19.
8.8
559
86
0
0.4
10
2 .0 0
183.841
11 .
76
7
ruthenium
71
49
415
34
cobalt
58.933
0
28
0
1 .7 8
31
W
Tc
(97.907)
7. 8
Co
27 3
55
2 47
13
7. 5
21
carbon
10
6
2 .4
0. 3
7
6
12.011
1. 8 1
0
74
23
43
2.4
2.5
14
1. 6 9
593
22
Tungsten
75
5
.
5
55.845
7
27
2 .54
1
6.6
10
4 26
57
iron
76
7
Technetium
70
28
7. 4
Fe
2 92
95
0.6
4 02
27
10.811
66
1. 9 3
2 .15
7p
2 . 28
Ta
8.4
95.951
34
180.948
104
1. 8 5
1. 4 5
1. 8 0
7s
1. 6 5
2 . 20
6d
B
Boron
80
1. 9 0
2 . 35
6p
2 . 20
2
6s
1. 9 1
8
73
tantalum
72
1
545
17
21
molybdenum
4.3
7. 3
14
2 . 20
2 .60
5f
35
8
0 .1
72
7
88
9. 3
1
3. 3
8.
54.938
1
26
2 . 28
8.5
2 .1
9
42
Mo
68
57
463
23
manganese
286
38
1. 8 8
Hf
Nb
92.906
30
178.492
26
41
Mn
71
4
7.1
2.9
15
2 . 20
7
3
72
4
51.996
1
25
2 . 20
1. 8
460
33
474
77
Cr
206
46
12
chromium
65
1
2
24
1. 8 3
3.0
17 3
6 .0
6.
6 .1
NIOBIUM
65
51
Hafnium
65
1
3.5
RADIUM
50
E57-71
0.9 0
39
69
0 .7 0
Fr
FRANCIUM
(223.020)
22
137.328
2.9
91.224
0 .1
0.9
24
Zr
V
50.942
248
07
1. 9 0
67 7
.0
87
Ba
7
40
19
2 . 36
.0 0
27
0
56
Barium
50
8
1. 8
5 .7
4.
4 37
55
7
23
vanadium
65
1
ziconium
64
47
4.5
340
10
1. 5 0
37
16 4
7.0
88.906
9.9
8.8
18
Y
Ti
47.867
1. 3 0
CAESIUM
2.
0. 89
0 .7 9
Cs
9. 5
0
39
yttrium
59
63
293
26
19
Titanium
65
9
2 .9
3 .1
15
87.620
72
132.905
Sr
44.956
7
22
1. 9 0
.0
55
2
38
Strontium
54
53
13 8
7.0
63
5
1. 5
Sc
Scandium
328
68
2 .16
671
50
9. 8
16
1. 6 0
8.
1.
calcium
40.078
6
21
1. 3 3
3.0
Ca
283
41
1. 2 2
40
85.468
15
0.95
RUBIDIUM
4
20
77
0. 82
Rb
14 8
.0
1. 5 5
.0
37
1.
1. 6 6
688
. 30
6
5d
57
1. 6 3
39
0. 8
5p
74
1. 5 4
8.8
7. 7
42
58
5s
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Sections are greyed out if that property is not known for a particular element
1. 3 6
39.098
4f
24.305
1. 0 0
0. 82
K
Potassium
4d
7
5
3 .16
.0
19
Order of filling of orbitals is shown to the right
4p
392
76
2 . 58
759
. 50
Density (g/cm3)
g/L at 0˚C for gases,
indicated with grey text
4s
20
2 .19
63
0.
Mg
f-block elements
each f sub-shell contains up to 14 electrons
3d
1. 9 0
5.8
.0
9
Relative Atomic Mass
For radioactive elements, the mass of the
most stable isotope is given in brackets
0
12
MAGNESIUM
73
97
0.0
3p
1 . 61
22.990
10 9
0.0
d-block elements
each d sub-shell contains up to 10 electrons
1.008
12
First ionisation energy (kJ/mol)
1. 31
SODIUM
41
65
0.93
Na
49
1. 0 5
.9
11
5
1. 8
1. 8 0
882
9. 5
Electronegativity (Pauling)
2p
3s
3.98
.7 9
97
4
HYDROGEN
13
9.012
89
H
2s
3.4 4
0. 5
BERYLLIUM
p-block elements
each p sub-shell contains up to 6 electrons
3 .0 4
0. 2
Be
1s
9
2 . 55
52
6.941
Atomic radius (Å)
Empirical radius, or calculated
where empirical unavailable
23
2 .0 4
Lithium
2.
s-block elements
each s sub-shell contains up to 2 electrons
1
0
4
1 . 57
0.98
Li
297
87
-2 5
9.1
0. 2 5
12
1. 6 0
7
3
1. 8 0
13 4
0. 5
25
2 .20
18
9
4.003
Boiling point (˚C)
Melting point (˚C)
9
0.0
12
8.
2
1.008
13
-26
2.2
27
-
-2 5
9.1
-
25
2
0. 31
1
3