The Periodic Table of Elements
1
Cambridge International AS & A Level
Group
2
13
name
Li
4
Be
lithium
beryllium
11
12
6.9
Na
9.0
Mg
metals
hydrogen
1.0
alkali metals
halogens
alkaline earth metals
noble gases
transition metals
lanthanoids
other metals
actinoids
non-metals
unclassified
24.3
3
4
5
6
7
8
9
10
11
19
20
21
22
23
24
25
26
27
28
29
Ca
Sc
Ti
V
Cr
Rb
Sr
strontium
55
56
85.5
Cs
87.6
Ba
caesium
barium
87
88
132.9
Fr
francium
–
Y
yttrium
88.9
57–71
lanthanoids
137.3
Ra
radium
89–103
actinoids
–
Pd
Ag
palladium
72
73
74
75
76
77
91.2
Hf
92.9
Ta
95.9
W
–
Re
101.1
Os
102.9
Ir
35
36
32
33
34
zinc
Cd
Se
Br
bromine
krypton
49
50
51
52
53
54
iodine
72.6
In
Sn
107.9
78
79
80
74.9
Sb
79.0
Te
Xe
127.6
126.9
131.3
84
85
86
114.8
118.7
antimony
tellurium
81
82
83
Tl
Pb
Bi
Po
Rn
–
–
osmium
190.2
192.2
iridium
platinum
195.1
197.0
gold
mercury
thallium
204.4
207.2
lead
bismuth
polonium
astatine
104
105
106
107
108
109
110
111
112
113
114
115
116
117
Rf
Db
Sg
Bh
Hs
Mt
Ds
Rg
200.6
Cn
Nh
Fl
209.0
Mc
–
Lv
Ts
rutherfordium
dubnium
seaborgium
bohrium
hassium
meitnerium
darmstadtium
roentgenium
copernicium
nihonium
flerovium
moscovium
livermorium
tennessine
58
59
60
61
62
63
64
65
66
67
68
69
70
71
–
Pr
–
Nd
–
Pm
–
Sm
–
Eu
–
Gd
–
Tb
–
Dy
–
Ho
–
Er
Tm
167.3
168.9
cerium
praseodymium
neodymium
promethium
samarium
europium
gadolinium
terbium
dysprosium
holmium
erbium
90
91
92
93
94
95
96
97
98
99
100
Th
thorium
232.0
140.9
Pa
protactinium
231.0
144.4
U
uranium
238.0
–
Np
neptunium
–
150.4
Pu
plutonium
–
152.0
157.3
Am
Cm
–
–
americium
curium
158.9
Bk
berkelium
–
162.5
Cf
californium
–
164.9
Es
einsteinium
–
–
Fm
fermium
–
–
Yb
–
Lu
thulium
ytterbium
lutetium
101
102
103
Md
mendelevium
–
173.1
No
nobelium
–
xenon
At
rhenium
186.2
83.8
I
tin
121.8
79.9
tungsten
183.8
Kr
selenium
tantalum
180.9
argon
arsenic
106.4
Hg
As
32.1
germanium
indium
112.4
Ge
31.0
gallium
cadmium
Au
39.9
31
silver
Pt
35.5
30
28.1
hafnium
140.1
Ac
Rh
rhodium
138.9
actinium
Ru
ruthenium
Ce
89
Tc
technetium
La
lanthanum
Mo
Ar
12
27.0
neon
Cl
chlorine
48
molybdenum
S
sulfur
47
46
P
16.0
phosphorus
44
45
Si
14.0
silicon
43
niobium
–
57
Nb
Al
12.0
aluminium
69.7
zirconium
178.5
–
Copyright © UCLES 2017
Zr
18
65.4
42
rubidium
17
63.5
41
52.0
Ne
16
58.7
40
50.9
copper
F
15
58.9
39
47.9
nickel
10
14
55.8
38
45.0
cobalt
O
9
13
54.9
37
40.1
iron
N
8
20.2
Ga
manganese
C
7
19.0
Zn
chromium
6
fluorine
Cu
vanadium
4.0
oxygen
Ni
titanium
helium
nitrogen
Co
scandium
He
carbon
10.8
Fe
calcium
18
boron
Mn
potassium
39.1
B
Recently discovered elements (113–118) only exist
for fractions of a second, and only a few atoms of
each have ever been made. Consequently, they are
not yet classified as metals or non-metals.
magnesium
K
17
non-metals
5
sodium
23.0
16
2
H
atomic symbol
relative atomic mass
3
15
1
atomic number
Key
14
175.0
Lr
lawrencium
–
radon
118
Og
oganesson
–