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Periodic table (large version)

Related subjects: Chemical elements

Background Information

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This large version of the periodic table contains the symbol, atomic number, and standard atomic weight of each element. The key below explains the colour-coding and layout of each entry.

Group → 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
↓  Period IA IIA IIIB IVB VB VIB VIIB VIIIB VIIIB VIIIB IB IIB IIIA IVA VA VIA VIIA VIIIA
1 hydrogen
1
H

1.00794(7)
Name of element
Atomic number
Chemical symbol

Relative atomic mass †

helium
2
He

4.002602(2)
2 lithium
3
Li

6.941(2)
beryllium
4
Be

9.012182(3)
boron
5
B

10.811(7)
carbon
6
C

12.0107(8)
nitrogen
7
N

14.00674(7)
oxygen
8
O

15.9994(3)
fluorine
9
F

18.9984032(5)
neon
10
Ne

20.1797(6)
3 sodium
11
Na

22.98976928(2)
magnesium
12
Mg

24.3050(6)
aluminium
13
Al

26.9815386(8)
silicon
14
Si

28.0855(3)
phosphorus
15
P

30.973762(2)
sulfur
16
S

32.066(6)
chlorine
17
Cl

35.4527(9)
argon
18
Ar

39.948(1)
4 potassium
19
K

39.0983(1)
calcium
20
Ca

40.078(4)
scandium
21
Sc

44.955912(6)
titanium
22
Ti

47.867(1)
vanadium
23
V

50.9415(1)
chromium
24
Cr

51.9961(6)
manganese
25
Mn

54.938045(5)
iron
26
Fe

55.845(2)
cobalt
27
Co

58.933195(5)
nickel
28
Ni

58.6934(2)
copper
29
Cu

63.546(3)
zinc
30
Zn

65.39(2)
gallium
31
Ga

69.723(1)
germanium
32
Ge

72.61(2)
arsenic
33
As

74.92160(2)
selenium
34
Se

78.96(3)
bromine
35
Br

79.904(1)
krypton
36
Kr

83.80(1)
5 rubidium
37
Rb

85.4678(3)
strontium
38
Sr

87.62(1)
yttrium
39
Y

88.90585(2)
zirconium
40
Zr

91.224(2)
niobium
41
Nb

92.90638(2)
molybdenum
42
Mo

95.94(1)
technetium
43
Tc

[97.9072]
ruthenium
44
Ru

101.07(2)
rhodium
45
Rh

102.90550(2)
palladium
46
Pd

106.42(1)
silver
47
Ag

107.8682(2)
cadmium
48
Cd

112.411(8)
indium
49
In

114.818(3)
tin
50
Sn

118.710(7)
antimony
51
Sb

121.760(1)
tellurium
52
Te

127.60(3)
iodine
53
I

126.90447(3)
xenon
54
Xe

131.29(2)
6 caesium
55
Cs

132.9054519(2)
barium
56
Ba

137.327(7)
Lanthanides
57-71
*


hafnium
72
Hf

178.49(2)
tantalum
73
Ta

180.94788(2)
tungsten
74
W

183.84(1)
rhenium
75
Re

186.207(1)
osmium
76
Os

190.23(3)
iridium
77
Ir

192.217(3)
platinum
78
Pt

195.084(9)
gold
79
Au

196.966569(4)
mercury
80
Hg

200.59(2)
thallium
81
Tl

204.3833(2)
lead
82
Pb

207.2(1)
bismuth
83
Bi

208.98040(1)
polonium
84
Po

[208.9824]
astatine
85
At

[209.9871]
radon
86
Rn

[222.0176]
7 francium
87
Fr

[223.0197]
radium
88
Ra

[226.0254]
Actinides
89-103
**


rutherfordium
104
Rf

[263.1125]
dubnium
105
Db

[262.1144]
seaborgium
106
Sg

[266.1219]
bohrium
107
Bh

[264.1247]
hassium
108
Hs

[269.1341]
meitnerium
109
Mt

[268.1388]
darmstadtium
110
Ds

[272.1463]
roentgenium
111
Rg

[272.1535]
ununbium
112
Uub

[277]
ununtrium
113
Uut

[284]
ununquadium
114
Uuq

[289]
ununpentium
115
Uup

[288]
ununhexium
116
Uuh

[292]
ununseptium
117
Uus

[292]‡
ununoctium
118
Uuo

[294]

Lanthanides   lanthanum
57
La

138.90547(7)
cerium
58
Ce

140.116(1)
praseodymium
59
Pr

140.90765(2)
neodymium
60
Nd

144.242(3)
promethium
61
Pm

[144.9127]
samarium
62
Sm

150.36(2)
europium
63
Eu

151.964(1)
gadolinium
64
Gd

157.25(3)
terbium
65
Tb

158.92535(2)
dysprosium
66
Dy

162.500(1)
holmium
67
Ho

164.93032(2)
erbium
68
Er

167.259(3)
thulium
69
Tm

168.93421(2)
ytterbium
70
Yb

173.04(3)
lutetium
71
Lu

174.967(1)
** Actinides   actinium
89
Ac

[227.0277]
thorium
90
Th

232.03806(2)
protactinium
91
Pa

231.03588(2)
uranium
92
U

238.02891(3)
neptunium
93
Np

[237.0482]
plutonium
94
Pu

[244.0642]
americium
95
Am

[243.0614]
curium
96
Cm

[247.0703]
berkelium
97
Bk

[247.0703]
californium
98
Cf

[251.0796]
einsteinium
99
Es

[252.0830]
fermium
100
Fm

[257.0951]
mendelevium
101
Md

[258.0984]
nobelium
102
No

[259.1011]
lawrencium
103
Lr

[262.110]


Categories and subcategories in the metal–nonmetal range

Metal Metalloid Nonmetal Unknown
chemical
properties
Alkali
metal
Alkaline
earth metal
Inner transition metal Transition
metal
Post-transition
metal
Other
nonmetal
Halogen Noble
gas
Lanthanide Actinide
State at standard temperature and pressure (0°C and 1 atm)
Gases Liquids Solids
Natural occurrence
Undiscovered Synthetic From decay Primordial

† A value in brackets, such as [259.1011], is the atomic mass of the most stable isotope unless it is an integer, in which case it is the mass number of the most stable isotope. In all other cases, the value is the relative atomic mass of common terrestrial composition, according to Atomic Weights of the Elements 2001, and includes its uncertainty in parenthesis. For example, the value of 1.00794(7) for hydrogen means that a normal terrestrial isotopic composition of hydrogen has a relative atomic mass of 1.00794 atomic mass units (u) with an uncertainty of 0.00007u, reflecting primarily local variability around the earth.
‡ This atomic mass is only an estimate, as this element has not yet been discovered.

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