www.cie.org.uk/alevel
Group
1
2
13
Key
3
14
15
16
17
2
H
He
hydrogen
helium
1.0
4
atomic number
18
1
5
6
7
8
9
4.0
10
Li
Be
atomic symbol
B
C
N
O
F
Ne
lithium
beryllium
name
boron
carbon
nitrogen
oxygen
fluorine
neon
6.9
11
9.0
12
relative atomic mass
10.8
13
12.0
14
14.0
15
16.0
16
19.0
17
20.2
18
Na
Mg
Al
Si
P
S
Cl
Ar
sodium
magnesium
aluminium
silicon
phosphorus
sulfur
chlorine
argon
23.0
19
24.3
20
27.0
31
28.1
32
31.0
33
32.1
34
35.5
35
39.9
36
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
K
Ca
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga
Ge
As
Se
Br
Kr
potassium
calcium
scandium
titanium
vanadium
chromium
manganese
iron
cobalt
nickel
copper
zinc
gallium
germanium
arsenic
selenium
bromine
krypton
39.1
37
40.1
38
45.0
39
47.9
40
50.9
41
52.0
42
54.9
43
55.8
44
58.9
45
58.7
46
63.5
47
65.4
48
69.7
49
72.6
50
74.9
51
79.0
52
79.9
53
83.8
54
Mo
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
I
Xe
ruthenium
rhodium
palladium
silver
cadmium
indium
tin
antimony
tellurium
iodine
xenon
–
101.1
102.9
106.4
107.9
112.4
121.8
127.6
77
78
79
80
82
83
84
126.9
85
131.3
76
114.8
81
118.7
75
Os
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
rhenium
osmium
iridium
platinum
gold
mercury
thallium
lead
bismuth
polonium
astatine
radon
183.8
186.2
190.2
195.1
197.0
200.6
204.4
207.2
209.0
–
–
–
106
107
108
192.2
109
110
111
112
Mt
Ds
Rg
Cn
Rb
Sr
Y
Zr
Nb
rubidium
strontium
yttrium
zirconium
niobium
85.5
87.6
88.9
91.2
92.9
95.9
55
56
57–71
72
73
74
Cs
Ba
lanthanoids
Hf
Ta
W
Re
caesium
barium
hafnium
tantalum
tungsten
132.9
137.3
178.5
180.9
87
88
89–103
104
105
actinoids
molybdenum technetium
Fr
Ra
Rf
Db
Sg
Bh
Hs
francium
radium
rutherfordium
dubnium
seaborgium
bohrium
hassium
–
–
–
–
–
–
–
lanthanoids
Back to contents page
actinoids
114
meitnerium darmstadtium roentgenium copernicium
–
–
–
–
116
Fl
Lv
flerovium
livermorium
–
–
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
promethium
samarium
europium
gadolinium
terbium
dysprosium
holmium
erbium
thulium
ytterbium
lutetium
–
93
150.4
94
152.0
95
157.3
96
158.9
97
162.5
98
164.9
99
167.3
100
168.9
101
173.1
102
175.0
103
lanthanum
cerium
138.9
89
140.1
90
praseodymium neodymium
140.9
91
144.4
92
Ac
Th
Pa
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
Lr
actinium
thorium
protactinium
uranium
neptunium
plutonium
americium
curium
berkelium
californium
einsteinium
fermium
mendelevium
nobelium
lawrencium
–
232.0
231.0
238.0
–
–
–
–
–
–
–
–
–
–
–
86
Cambridge International AS & A Level Chemistry 9701 syllabus. General syllabus requirements and information
Syllabus for examination in 2019, 2020 and 2021.
92
The Periodic Table of Elements