Periodic Table of the Elements Chemistry Reference Sheet California Standards Test
Sodium
22.99
Na
11
Element symbol
*
Element name
Hydrogen
1.01
H
1
Lithium
6.94
Li
3
Sodium
22.99
Na
11
39.10
19
K
58.69
Ni
28
Rubidium
85.47
Rb
37
140.91
Pr
59
(261)
Rf
104
95.94
Mo
42
(258)
Md
101
72.61
Ge
32
1
1A
2
2A
1
2
3
4
7
7B
11
1B
12
2B
13
3A
16
6A
8
5
6
7
9
8B
10
14
4A
15
5A
17
7A
18
8A
3
3B
4
4B
5
5B
6
6B
Copper
63.55
Cu
29
Cobalt
58.93
Co
27
Helium
4.00�
He
2
Boron
10.81
B
5
Carbon
12.01�
C
6
Nitrogen
14.01
N
7
Oxygen
16.00
O
8
19.00�
F
9
Neon
20.18�
Ne
10
26.98
Al
13
Silicon
28.09�
Si
14
30.97
P
15
Sulfur
32.07
S
16
35.45
Cl
17
Argon
39.95
Ar
18
Calcium
40.08
Ca
20
Scandium
44.96
Sc
21
Titanium
47.87
Ti
22
Chromium
52.00
Cr
24
Iron
55.85
Fe
26
Zinc
65.39
Zn
30
Gallium
69.72
Ga
31
Arsenic
74.92
As
33
Selenium
78.96
Se
34
Bromine
79.90
Br
35
83.80
Kr
36
Strontium
87.62
Sr
38
88.91
Y
39
Zirconium
91.22
Zr
40
Niobium
92.91
Nb
41
(98)
Tc
43
Ruthenium
101.07
Ru
44
Rhodium
102.91
Rh
45
106.42
46
107.87
Ag
47
Cadmium
112.41
Cd
48
Indium
114.82
In
49
Tin
118.71
Sn
50
121.76
Sb
51
127.60
52
Iodine
126.90
I
53
Xenon
131.29
Xe
54
Cesium
132.91
Cs
55
137.33
Ba
56
138.91
La
57
Hafnium
178.49
Hf
72
180.95
73
183.84
W
74
Rhenium
186.21
Re
75
Osmium
190.23
Os
76
192.22
Ir
77
195.08
Pt
78
Gold
19 7
79
200.59
Hg
80
Thallium
204.38
Tl
81
Lead
207.2
Pb
82
208.98
Bi
83
(209)
84
Astatine
(210)
At
85
Pd
Radon
(222)
Rn
86
(223)
Fr
87
Radium
(226)
Ra
88
Actinium
(227)
Ac
89
Dubnium
(262)
Db
105
Seaborgium
(266)
Sg
106
(264)
Bh
107
Hassium
(269)
Hs
108
(268)
Mt
109
140.12
Ce
58
Neodymium
144.24
Nd
60
Promethium
(145)
Pm
61
150.36
Sm
62
Europium
151.96
Eu
63
Gadolinium
157.25
Gd
64
158.93
Tb
65
Dysprosium
162.50
Dy
66
Holmium
164.93
Ho
67
Erbium
167.26
Er
68
Thulium
168.93
Tm
69
Ytterbium
173.04
Yb
70
Lutetium
174.97
Lu
71
232.04
Th
90
Protactinium
231.04
91
238.03
U
92
Neptunium
(237)
Np
93
Plutonium
(244)
Pu
94
(243)
Am
95
(247)
Cm
96
(247)
Bk
97
(251)
Cf
98
Einsteinium
(252)
Es
99
(257)
Fm
100
Nobelium
(259)
No
102
(262)
Lr
103
Magnesium
24.31
Mg
12
9.01
Be
4
50.94
V
23
Manganese
54.94
Mn
25
*
Atomic number
Average atomic mass
Potassium Nickel
Praseodymium
Rutherfordium
Molybdenum
Mendelevium
Germanium
Key
Fluorine
Aluminum
Phosphorus
Chlorine
Krypton
Yttrium Technetium Palladium Silver Antimony Tellurium
Te
Barium Lanthanum Tantalum
Ta Tungsten Iridium Platinum
6.9
Au Mercury Bismuth Polonium
Po
Francium Bohrium Meitnerium
Cerium Samarium Terbium
Thorium Pa Uranium Americium Curium Berkelium Californium Fermium Lawrencium
Beryllium
Vanadium
If this number is in parentheses, then
it refers to the atomic mass of the
most stable isotope.
Copyright © 2003 California Department of Education