Group
1
13
2
14
15
16
17
2
1
Key
4
3
Li
Be
lithium
beryllium
6.9
11
H
He
hydrogen
helium
1.0
4.0
5
atomic number
O
F
name
boron
carbon
nitrogen
oxygen
fluorine
relative atomic mass
10.8
13
sodium
magnesium
24.3
3
4
5
6
7
8
9
10
11
19
20
21
22
23
V
24
Cr
25
Mn
26
27
28
29
K
Ca
Sc
Ti
potassium
calcium
scandium
titanium
vanadium
chromium
manganese
54.9
55.8
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
Ru
Rh
Pd
rubidium
strontium
yttrium
zirconium
niobium
molybdenum
technetium
ruthenium
rhodium
palladium
85.5
87.6
56
55
Cs
Ba
caesium
barium
87
88
132.9
88.9
57–71
lanthanoids
137.3
Fr
Ra
francium
radium
–
45.0
actinoids
–
La
lanthanum
actinoids
91.2
72
50.9
92.9
73
52.0
95.9
74
–
75
12
aluminium
silicon
phosphorus
sulfur
chlorine
argon
30
31
32
33
34
35
copper
63.5
65.4
44
45
46
47
76
77
106.4
78
195.1
197.0
109
110
tungsten
rhenium
osmium
190.2
192.2
104
105
106
107
108
Kr
zinc
gallium
germanium
arsenic
selenium
bromine
krypton
48
49
50
51
52
53
69.7
112.4
80
114.8
81
gold
mercury
thallium
204.4
207.2
111
112
radon
113
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
flerovium
moscovium
livermorium
tennessine
oganesson
Ds
Rg
Cn
Nh
darmstadtium
roentgenium
copernicium
nihonium
62
63
64
65
66
–
67
–
68
209.0
–
69
–
–
70
–
–
71
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
138.9
140.1
cerium
praseodymium
neodymium
promethium
samarium
europium
gadolinium
terbium
dysprosium
holmium
erbium
thulium
ytterbium
lutetium
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
lawrencium
140.9
144.4
–
150.4
152.0
157.3
158.9
162.5
164.9
167.3
168.9
173.1
Ac
Th
Pa
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
actinium
thorium
protactinium
uranium
neptunium
plutonium
americium
curium
berkelium
californium
einsteinium
fermium
mendelevium
nobelium
–
232.0
231.0
238.0
–
–
–
–
–
–
86
astatine
Mt
61
85
polonium
meitnerium
–
84
xenon
131.3
bismuth
Hs
–
83
iodine
126.9
lead
hassium
60
82
127.6
Rn
Bh
59
tellurium
121.8
At
bohrium
58
antimony
54
Xe
Po
Sg
–
tin
118.7
I
83.8
Bi
seaborgium
–
Te
79.9
Pb
Db
–
79.0
Sb
Tl
200.6
74.9
Sn
Hg
dubnium
–
72.6
Au
Rf
–
36
Br
rutherfordium
–
39.9
Se
indium
platinum
tantalum
35.5
As
cadmium
iridium
hafnium
32.1
Ge
silver
79
31.0
Ga
In
107.9
28.1
18
Zn
Cd
Pt
Os
27.0
Ag
Ir
Re
186.2
Ar
nickel
W
183.8
Cl
cobalt
Ta
180.9
S
P
17
neon
20.2
16
iron
102.9
19.0
15
Cu
101.1
16.0
14
Ni
58.7
14.0
Si
Co
58.9
12.0
10
Ne
Al
Fe
Hf
–
57
lanthanoids
47.9
178.5
89–103
9
N
12
40.1
8
C
Mg
39.1
7
B
Na
23.0
6
atomic symbol
9.0
18
–
–
–
–
175.0
Lr
–
–
–
24
9701/42/O/N/22
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The Periodic Table of Elements