939
APPENDIX A
Periodic Table of Elements
Representative
Elements (
s
Series)
H
1
1.0079
Li
3
6.941
Na
11
22.989
K
19
39.098
Rb
37
85.468
Cs
55
132.905
Fr
87
(223)
Ca
20
40.08
Sr
38
87.62
Ba
56
137.34
Ra
88
(226)
Sc
21
44.956
Y
39
88.905
La
*57
138.91
Ac
**89
(227)
Ti
22
47.90
Zr
40
91.22
Hf
72
178.49
Rf
104
(261)
V
23
50.942
Nb
41
92.906
Ta
73
180.948
Ha
105
(262)
Mn
25
54.938
Mo
42
95.94
W
74
183.85
Sg
106
(263)
(261)
(265)
(266)
Cr
24
51.996
Tc
43
(99)
Re
75
186.2
Ns
107
Fe
26
55.847
Ru
44
101.07
Os
76
190.2
Hs
108
Co
27
58.933
Rh
45
102.905
Ir
77
192.2
Mt
109
Ni
28
58.71
Pd
46
106.4
Pt
78
195.09
Np
93
(237)
Cu
29
63.546
Ag
47
107.868
Au
79
196.967
Pu
94
244.064
Zn
30
65.38
Cd
48
112.40
Hg
80
200.59
Am
95
(243)
Ga
31
69.723
In
49
114.82
Tl
81
204.37
Cm
96
(247)
Ge
32
72.59
Sn
50
118.69
Pb
82
Bk
97
(247)
As
33
74.922
Sb
51
121.75
Bi
83
208.980
Cf
98
242.058
Se
34
78.96
Te
52
127.60
Po
84
(209)
Es
99
(254)
Br
35
79.904
I
53
126.904
At
85
(210)
Fm
100
257.095
Kr
36
83.80
Xe
54
131.30
Rn
86
(222)
Md
101
258.10
Yb
70
173.04
No
102
259.101
Lu
71
174.97
Lr
103
260.105
Pr
59
140.907
Nd
60
144.24
Pm
61
144.913
Sm
62
150.35
Eu
63
151.96
Gd
64
157.25
Tb
65
158.925
Dy
66
162.50
Ho
67
164.930
Er
68
167.26
Tm
69
168.934
Mendelevium
Fermium
Einsteinium
Californium
Berkelium
Curium
Americium
Plutonium
Neptunium
Uranium
Protactinium
Thorium
Cerium
Francium
Cesium
Barium
Lanthanum
Hafnium
Rhenium
Osmium
Iridium
Platinum
Gold
Mercury
Thal ium
Lead
Bismuth
Polonium
Astatine
Radon
Xenon
Krypton
Bromine
Selenium
Arsenic
Germanium
Gal ium
Zinc
Copper
Nickel
Cobalt
Iron
Manganese
Chromium
Vanadium
Titanium
Scandium
Calcium
Potassium
Sodium
Magnesium
Beryl ium
Lithium
Hydrogen
H
1
1.0079
Hydrogen
Aluminum
Silicon
Phosphorous
Sulfur
Chlorine
Argon
Neon
Helium
Fluorine
Oxygen
Carbon
Nitrogen
Boron
Iodine
Tel urium
Antimony
Tin
Indium
Cadmium
Silver
Pal adium
Rhodium
Ruthenium
Technetium
Niobium
Zirconium
Yttrium
Strontium
Rubidium
Molybdenum
Tantalum
Tungsten
Radium
Actinium
Rutherfordium
Hahnium
Seaborgium Neilsbohrium
Hassium
Meitnerium
Neodymium
Promethium
Samarium
Europium
Gadolinium
Terbium
Dysprosium
Holmium
Erbium
Thulium
Ytterbium
Lutetium
Praseodymium
Nobelium
Lawrencium
Th
90
232.038
Pa
91
(231)
U
92
238.03
Ce
58
140.12
B
5
10.811
Al
13
26.9815
C
6
12.0112
Si
14
28.086
N
7
14.0067
P
15
30.9738
O
8
15.9994
S
16
32.064
F
9
18.9984
Cl
17
35.453
Ne
10
20.179
Ar
18
39.948
He
2
4.0026
Be
4
9.0122
Mg
12
24.305
*
Lanthanides
**
Actinides
4f
5f
Atomic Number
Key
Symbol
Name
Atomic Weight
IIIB
IVB
VB
VIB
VIIB
VIIIB
IB
IIB
IIA
IA
IIIA
IVA
VA
VIA
VIIA
VIIIA
Representative
Elements (
p
Series)
Transition Metals (
d
Series of Transition Elements)
Inner Transition Elements (
f
Series)
207.19
1
2
3
4
5
6
7
Period
Elements 110 to 114 have been reported in experiments, but have not yet been conĀ± rmed.
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