Chemistry Reference Sheet
Periodic Table of the Elements
California Standards Test
1 1A 1 1
H
Hydrogen
1.01
3
2
3
Li
Beryllium
9.01
11
12
Na
6
7
Mg
Sodium
Magnesium
22.99
24.31
K
Key
20
Ca
Na Sodium
22.99
3 3B 21
Sc
4 4B 22
5 5B 23
Ti
V
Potassium
Calcium
Scandium
Titanium
Vanadium
39.10
40.08
44.96
47.87
50.94
38
39
Rubidium
Strontium
Yttrium
Zirconium
Niobium
85.47
87.62
88.91
91.22
55
56
57
72
Rb Cs
Sr
Y
Hf
41
Nb
7 7B 25
8 26
Mn
Fe Iron
Cobalt
52.00
54.94
55.85
58.93
42
43
44
Mo
Tc
Ru
92.91
95.94
(98)
101.07
73
74
75
Co 45
Rh
10 28
Ni
11 1B 29
Nitrogen
Oxygen
Fluorine
Neon
12.01�
14.01
16.00
19.00�
20.18�
14
15
16
Si
P
S
F
17
Cl
10
Ne 18
Ar
12 2B 30
Aluminum
Silicon
Phosphorus
Sulfur
Chlorine
Argon
26.98
28.09�
30.97
32.07
35.45
39.95
31
Zinc
Gallium
Germanium
Arsenic
Selenium
Bromine
Krypton
65.39
69.72
72.61
74.92
78.96
79.90
83.80
52
53
Palladium
Silver
102.91
106.42
107.87
76
77
78
79
49
50
51
Cadmium
Indium
Tin
Antimony
Tellurium
Iodine
Xenon
112.41
114.82
118.71
121.76
127.60
126.90
131.29
80
81
82
83
84
85
86
Rhenium
Osmium
Iridium
Platinum
Pt
Au Gold
Mercury
Thallium
Tl
Pb Lead
Bismuth
Polonium
Astatine
Radon
132.91
137.33
138.91
178.49
180.95
183.84
186.21
190.23
192.22
195.08
196.97
200.59
204.38
207.2
208.98
(209)
(210)
(222)
87
88
89
104
105
106
107
108
109
Bh
Hs
Radium
Actinium
Rutherfordium
Dubnium
Seaborgium
Bohrium
Hassium
Meitnerium
(223)
(226)
(227)
(261)
(262)
(266)
(264)
(269)
(268)
58
* If this number is in parentheses, then it refers to the atomic mass of the most stable isotope.
Cerium
140.12
90
59
Pr
Praseodymium
140.91
60
61
62
Nd
Pm
Sm
144.24
(145)
150.36
Neodymium Promethium Samarium
68
Er
69
Tm
70
Yb
71
Lu
Terbium
Dysprosium
Holmium
Erbium
Thulium
Ytterbium
Lutetium
157.25
158.93
162.50
164.93
167.26
168.93
173.04
174.97
102
103
Neptunium
Plutonium
Americium
Curium
232.04
231.04
238.03
(237)
(244)
(243)
(247)
Copyright © 2003 California Department of Education
67
Ho
Gadolinium
Uranium
Pu
66
Dy
151.96
Protactinium
Np
65
Tb
Europium
Thorium
U
94
64
Gd
92
Pa
93
63
Eu
91
Th
Rn
Mt
Francium
Ce
At
Xe
Tungsten
Sg
Po
I
54
Sn
Bi
Te
Kr
In
Hg
Sb
Br
36
63.55
48
Se
35
Copper
Cd
As
34
Nickel
47
Ge
33
58.69
46
Ga
32
Zn
Rhodium
Ir
Al
O
Cu Ag
Os
Carbon
N
4.00�
Tantalum
Db
Re
Boron
10.81
C
Helium
Hafnium
Rf
W
17 7A 9
13
Pd
Molybdenum Technetium Ruthenium
16 6A 8
Lanthanum
Ac
Ta
9 8B 27
Cr
Chromium Manganese
15 5A 7
Barium
Ra
La
40
Zr
6 6B 24
14 4A 6
B
Average atomic mass*
He
13 3A 5
Cesium
Fr
Ba
Atomic number Element symbol Element name
11
Be
6.94
37
5
2 2A 4
Lithium
19 4
18 8A 2
95
Am
96
Cm
97
Bk
98
Cf
99
Es
Berkelium Californium Einsteinium
(247)
(251)
(252)
100
Fm
101
Md
Fermium
Mendelevium
(257)
(258)
No
Lr
Nobelium Lawrencium
(259)
(262)
