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The Periodic Table of Elements

Non Metal
Alkali Metal
Alkaline Earth Metal
Transition Metal
Post Transition Metal
Metalloid
Halogen
Noble Gas
Lanthanide
Actinide
Unknown
1
1.008
1
H
Hydrogen
1.008
Atomic Weight
1
Atomic No.

H

Hydrogen
Atomic Name

Hydrogen

HI-dreh-jen

Gas

Atomic Weight:

1.0

Atomic Number:

1

Hexagonal

6.941
3
Li
Lithium
6.941
Atomic Weight
3
Atomic No.

Li

Lithium
Atomic Name

Lithium

LITH-i-em

Solid

Atomic Weight:

6.9

Atomic Number:

3

Cubic: Body centered

22.99
11
Na
Sodium
22.99
Atomic Weight
11
Atomic No.

Na

Sodium
Atomic Name

Sodium

SO-di-em

Solid

Atomic Weight:

23.0

Atomic Number:

11

Cubic: Body centered

39.098
19
K
Potassium
39.098
Atomic Weight
19
Atomic No.

K

Potassium
Atomic Name

Potassium

pe-TASS-i-em

Solid

Atomic Weight:

39.1

Atomic Number:

19

Cubic: Body centered

85.468
37
Rb
Rubidium
85.468
Atomic Weight
37
Atomic No.

Rb

Rubidium
Atomic Name

Rubidium

roo-BID-i-em

Solid

Atomic Weight:

85.5

Atomic Number:

37

Cubic: Body centered

132.905
55
Cs
Caesium
132.905
Atomic Weight
55
Atomic No.

Cs

Caesium
Atomic Name

Caesium

SEE-zi-em

Solid

Atomic Weight:

132.9

Atomic Number:

55

Cubic: Body centered

223
87
Fr
Francium
223
Atomic Weight
87
Atomic No.

Fr

Francium
Atomic Name

Francium

FRAN-si-em

Solid

Atomic Weight:

223.0

Atomic Number:

87

Cubic: Body centered

2
9.012
4
Be
Beryllium
9.012
Atomic Weight
4
Atomic No.

Be

Beryllium
Atomic Name

Beryllium

beh-RIL-i-em

Solid

Atomic Weight:

9.0

Atomic Number:

4

Hexagonal

24.305
12
Mg
Magnesium
24.305
Atomic Weight
12
Atomic No.

Mg

Magnesium
Atomic Name

Magnesium

mag-NEE-zih-em

Solid

Atomic Weight:

24.3

Atomic Number:

12

Hexagonal

40.078
20
Ca
Calcium
40.078
Atomic Weight
20
Atomic No.

Ca

Calcium
Atomic Name

Calcium

KAL-si-em

Solid

Atomic Weight:

40.1

Atomic Number:

20

Cubic: Face centered

87.62
38
Sr
Strontium
87.62
Atomic Weight
38
Atomic No.

Sr

Strontium
Atomic Name

Strontium

STRON-she-em

Solid

Atomic Weight:

87.6

Atomic Number:

38

Cubic: Face centered

137.327
56
Ba
Barium
137.327
Atomic Weight
56
Atomic No.

Ba

Barium
Atomic Name

Barium

BAR-i-em

Solid

Atomic Weight:

137.3

Atomic Number:

56

Cubic: Body centered

226
88
Ra
Radium
226
Atomic Weight
88
Atomic No.

Ra

Radium
Atomic Name

Radium

RAY-di-em

Solid

Atomic Weight:

226.0

Atomic Number:

88

Cubic: Body centered

3
44.956
21
Sc
Scandium
44.956
Atomic Weight
21
Atomic No.

Sc

Scandium
Atomic Name

Scandium

SKAN-di-em

Solid

Atomic Weight:

45.0

Atomic Number:

21

Hexagonal

88.906
39
Y
Yttrium
88.906
Atomic Weight
39
Atomic No.

Y

Yttrium
Atomic Name

Yttrium

IT-ri-em

Solid

Atomic Weight:

88.9

Atomic Number:

39

Hexagonal

4
5
6
7
8
9
10
11
12
47.867
22
Ti
Titanium
47.867
Atomic Weight
22
Atomic No.

Ti

Titanium
Atomic Name

Titanium

tie-TAY-ni-em

Solid

Atomic Weight:

47.9

Atomic Number:

22

Hexagonal

50.942
23
V
Vanadium
50.942
Atomic Weight
23
Atomic No.

V

Vanadium
Atomic Name

Vanadium

veh-NAY-di-em

Solid

Atomic Weight:

50.9

Atomic Number:

23

Cubic: Body centered

51.996
24
Cr
Chromium
51.996
Atomic Weight
24
Atomic No.

Cr

Chromium
Atomic Name

Chromium

KROH-mi-em

Solid

Atomic Weight:

52.0

Atomic Number:

24

Cubic: Body centered

54.938
25
Mn
Manganese
54.938
Atomic Weight
25
Atomic No.

Mn

Manganese
Atomic Name

Manganese

MAN-ge-nees

Solid

Atomic Weight:

54.9

Atomic Number:

25

Cubic: Body centered

55.845
26
Fe
Iron
55.845
Atomic Weight
26
Atomic No.

Fe

Iron
Atomic Name

Iron

EYE-ern

Solid

Atomic Weight:

55.8

Atomic Number:

26

Cubic: Body centered

58.693
28
Ni
Nickel
58.693
Atomic Weight
28
Atomic No.

Ni

Nickel
Atomic Name

Nickel

NIK-l

Solid

Atomic Weight:

58.7

Atomic Number:

28

Cubic: Face centered

58.933
27
Co
Cobalt
58.933
Atomic Weight
27
Atomic No.

Co

Cobalt
Atomic Name

Cobalt

KO-bolt

Solid

Atomic Weight:

58.9

Atomic Number:

27

Hexagonal

63.546
29
Cu
Copper
63.546
Atomic Weight
29
Atomic No.

Cu

Copper
Atomic Name

Copper

KOP-er

Solid

Atomic Weight:

63.5

Atomic Number:

29

Cubic: Face centered

65.38
30
Zn
Zinc
65.38
Atomic Weight
30
Atomic No.

Zn

Zinc
Atomic Name

Zinc

ZINK

Solid

Atomic Weight:

65.4

Atomic Number:

30

Hexagonal

91.224
40
Zr
Zirconium
91.224
Atomic Weight
40
Atomic No.

Zr

Zirconium
Atomic Name

Zirconium

zer-KO-ni-em

Solid

Atomic Weight:

91.2

Atomic Number:

40

Hexagonal

92.906
41
Nb
Niobium
92.906
Atomic Weight
41
Atomic No.

Nb

Niobium
Atomic Name

Niobium

ni-OH-bee-em

Solid

Atomic Weight:

92.9

Atomic Number:

41

Cubic: Body centered

95.95
42
Mo
Molybdenum
95.95
Atomic Weight
42
Atomic No.

Mo

Molybdenum
Atomic Name

Molybdenum

meh-LIB-deh-nem

Solid

Atomic Weight:

96.0

Atomic Number:

42

Cubic: Body centered

97
43
Tc
Technetium
97
Atomic Weight
43
Atomic No.

Tc

Technetium
Atomic Name

Technetium

tek-NEE-shi-em

Solid

Atomic Weight:

97.0

Atomic Number:

43

Hexagonal

101.07
44
Ru
Ruthenium
101.07
Atomic Weight
44
Atomic No.

Ru

Ruthenium
Atomic Name

Ruthenium

roo-THE-ni-em

Solid

Atomic Weight:

101.1

Atomic Number:

44

Hexagonal

102.905
45
Rh
Rhodium
102.905
Atomic Weight
45
Atomic No.

Rh

Rhodium
Atomic Name

Rhodium

RO-di-em

Solid

Atomic Weight:

102.9

Atomic Number:

45

Cubic: Face centered

106.42
46
Pd
Palladium
106.42
Atomic Weight
46
Atomic No.

Pd

Palladium
Atomic Name

Palladium

peh-LAY-di-em

Solid

Atomic Weight:

106.4

Atomic Number:

46

Cubic: Face centered

107.868
47
Ag
Silver
107.868
Atomic Weight
47
Atomic No.

Ag

Silver
Atomic Name

Silver

SIL-ver

Solid

Atomic Weight:

107.9

Atomic Number:

47

Cubic: Face centered

112.414
48
Cd
Cadmium
112.414
Atomic Weight
48
Atomic No.

Cd

Cadmium
Atomic Name

Cadmium

KAD-me-em

Solid

Atomic Weight:

112.4

Atomic Number:

48

Hexagonal

178.49
72
Hf
Hafnium
178.49
Atomic Weight
72
Atomic No.

Hf

Hafnium
Atomic Name

Hafnium

HAF-ni-em

Solid

Atomic Weight:

178.5

Atomic Number:

72

Hexagonal

180.948
73
Ta
Tantalum
180.948
Atomic Weight
73
Atomic No.

Ta

Tantalum
Atomic Name

Tantalum

TAN-te-lem

Solid

Atomic Weight:

180.9

Atomic Number:

73

Cubic: Body centered

183.84
74
W
Tungsten
183.84
Atomic Weight
74
Atomic No.

W

Tungsten
Atomic Name

Tungsten

TUNG-sten

Solid

Atomic Weight:

183.8

Atomic Number:

74

Cubic: Body centered

186.207
75
Re
Rhenium
186.207
Atomic Weight
75
Atomic No.

Re

Rhenium
Atomic Name

Rhenium

REE-ni-em

Solid

Atomic Weight:

186.2

Atomic Number:

75

Hexagonal

190.23
76
Os
Osmium
190.23
Atomic Weight
76
Atomic No.

Os

Osmium
Atomic Name

Osmium

OZ-mi-em

Solid

Atomic Weight:

190.2

Atomic Number:

76

Hexagonal

192.217
77
Ir
Iridium
192.217
Atomic Weight
77
Atomic No.

Ir

Iridium
Atomic Name

Iridium

i-RID-i-em

Solid

Atomic Weight:

192.2

Atomic Number:

77

Cubic: Face centered

195.084
78
Pt
Platinum
195.084
Atomic Weight
78
Atomic No.

Pt

Platinum
Atomic Name

Platinum

PLAT-n-em

Solid

Atomic Weight:

195.1

Atomic Number:

78

Cubic: Face centered

196.967
79
Au
Gold
196.967
Atomic Weight
79
Atomic No.

Au

Gold
Atomic Name

Gold

GOLD

Solid

Atomic Weight:

197.0

Atomic Number:

79

Cubic: Face centered

200.592
80
Hg
Mercury
200.592
Atomic Weight
80
Atomic No.

Hg

Mercury
Atomic Name

Mercury

MER-kyoo-ri

Liquid

Atomic Weight:

200.6

Atomic Number:

80

Rhombohedral

267
104
Rf
Rutherfordium
267
Atomic Weight
104
Atomic No.

Rf

Rutherfordium
Atomic Name

Rutherfordium

ruth-er-FORD-i-em

Unknown

Atomic Weight:

267.0

Atomic Number:

104

Unknown

269
106
Sg
Seaborgium
269
Atomic Weight
106
Atomic No.

Sg

Seaborgium
Atomic Name

Seaborgium

see-BORG-i-em

Unknown

Atomic Weight:

269.0

Atomic Number:

106

Unknown

270
105
Db
Dubnium
270
Atomic Weight
105
Atomic No.

Db

Dubnium
Atomic Name

Dubnium

HA-ni-em

Unknown

Atomic Weight:

270.0

Atomic Number:

105

Unknown

270
108
Hs
Hassium
270
Atomic Weight
108
Atomic No.

Hs

Hassium
Atomic Name

Hassium

HES-i-em

Unknown

Atomic Weight:

270.0

Atomic Number:

108

Unknown

270
107
Bh
Bohrium
270
Atomic Weight
107
Atomic No.

Bh

Bohrium
Atomic Name

Bohrium

neels-BOR-i-em

Unknown

Atomic Weight:

270.0

Atomic Number:

107

Unknown

278
109
Mt
Meitnerium
278
Atomic Weight
109
Atomic No.

Mt

Meitnerium
Atomic Name

Meitnerium

MITE-ner-i-um

Unknown

Atomic Weight:

278.0

Atomic Number:

109

Unknown

281
111
Rg
Roentgenium
281
Atomic Weight
111
Atomic No.

Rg

Roentgenium
Atomic Name

Roentgenium

oon-nun-OON-i-em

Unknown

Atomic Weight:

281.0

Atomic Number:

111

Unknown

281
110
Ds
Darmstadtium
281
Atomic Weight
110
Atomic No.

Ds

Darmstadtium
Atomic Name

Darmstadtium

oon-nun-NIL-i-em

Unknown

Atomic Weight:

281.0

Atomic Number:

110

Unknown

285
112
Cn
Copernicium
285
Atomic Weight
112
Atomic No.

Cn

Copernicium
Atomic Name

Copernicium

KOH-pər-NIS-ee-əm

Unknown

Atomic Weight:

285.0

Atomic Number:

112

Unknown

13
14
15
16
17
10.811
5
B
Boron
10.811
Atomic Weight
5
Atomic No.

B

Boron
Atomic Name

Boron

BO-ron

Solid

Atomic Weight:

10.8

Atomic Number:

5

Rhombohedral

12.011
6
C
Carbon
12.011
Atomic Weight
6
Atomic No.

C

Carbon
Atomic Name

Carbon

KAR-ben

Solid

Atomic Weight:

12.0

Atomic Number:

6

Hexagonal

14.007
7
N
Nitrogen
14.007
Atomic Weight
7
Atomic No.

N

Nitrogen
Atomic Name

Nitrogen

NYE-treh-gen

Gas

Atomic Weight:

14.0

Atomic Number:

7

Hexagonal

15.999
8
O
Oxygen
15.999
Atomic Weight
8
Atomic No.

O

Oxygen
Atomic Name

Oxygen

OK-si-jen

Gas

Atomic Weight:

16.0

Atomic Number:

8

Cubic

18.998
9
F
Fluorine
18.998
Atomic Weight
9
Atomic No.

F

Fluorine
Atomic Name

Fluorine

FLU-eh-reen

Gas

Atomic Weight:

19.0

Atomic Number:

9

Cubic

26.982
13
Al
Aluminium
26.982
Atomic Weight
13
Atomic No.

Al

Aluminium
Atomic Name

Aluminium

ah-LOO-men-em

Solid

Atomic Weight:

27.0

Atomic Number:

13

Cubic: Face centered

28.085
14
Si
Silicon
28.085
Atomic Weight
14
Atomic No.

Si

Silicon
Atomic Name

Silicon

SIL-i-ken

Solid

Atomic Weight:

28.1

Atomic Number:

14

Cubic: Face centered

30.974
15
P
Phosphorus
30.974
Atomic Weight
15
Atomic No.

P

Phosphorus
Atomic Name

Phosphorus

FOS-fer-es

Solid

Atomic Weight:

31.0

Atomic Number:

15

Cubic

32.06
16
S
Sulphur
32.06
Atomic Weight
16
Atomic No.

S

Sulphur
Atomic Name

Sulphur

SUL-fer

Solid

Atomic Weight:

32.1

Atomic Number:

16

Orthorhombic

35.453
17
Cl
Chlorine
35.453
Atomic Weight
17
Atomic No.

Cl

Chlorine
Atomic Name

Chlorine

KLOR-een

Gas

Atomic Weight:

35.5

Atomic Number:

17

Orthorhombic

69.723
31
Ga
Gallium
69.723
Atomic Weight
31
Atomic No.

Ga

Gallium
Atomic Name

Gallium

GAL-i-em

Solid

Atomic Weight:

69.7

Atomic Number:

31

Orthorhombic

72.63
32
Ge
Germanium
72.63
Atomic Weight
32
Atomic No.

Ge

Germanium
Atomic Name

Germanium

jer-MAY-ni-em

Solid

Atomic Weight:

72.6

Atomic Number:

32

Cubic: Face centered

74.922
33
As
Arsenic
74.922
Atomic Weight
33
Atomic No.

As

Arsenic
Atomic Name

Arsenic

AR-s'n-ik

Solid

Atomic Weight:

74.9

Atomic Number:

33

Rhombohedral

78.971
34
Se
Selenium
78.971
Atomic Weight
34
Atomic No.

Se

Selenium
Atomic Name

Selenium

si-LEE-ni-em

Solid

Atomic Weight:

79.0

Atomic Number:

34

Hexagonal

79.904
35
Br
Bromine
79.904
Atomic Weight
35
Atomic No.

Br

Bromine
Atomic Name

Bromine

BRO-meen

Liquid

Atomic Weight:

79.9

Atomic Number:

35

Orthorhombic

114.818
49
In
Indium
114.818
Atomic Weight
49
Atomic No.

In

Indium
Atomic Name

Indium

IN-di-em

Solid

Atomic Weight:

114.8

Atomic Number:

49

Tetragonal

118.71
50
Sn
Tin
118.71
Atomic Weight
50
Atomic No.

Sn

Tin
Atomic Name

Tin

TIN

Solid

Atomic Weight:

118.7

Atomic Number:

50

Tetragonal

121.76
51
Sb
Antimony
121.76
Atomic Weight
51
Atomic No.

Sb

Antimony
Atomic Name

Antimony

AN-teh-MOH-ni

Solid

Atomic Weight:

121.8

Atomic Number:

51

Rhombohedral

127.6
52
Te
Tellurium
127.6
Atomic Weight
52
Atomic No.

Te

Tellurium
Atomic Name

Tellurium

te-LOOR-i-em

Solid

Atomic Weight:

127.6

Atomic Number:

52

Hexagonal

126.904
53
I
Iodine
126.904
Atomic Weight
53
Atomic No.

I

Iodine
Atomic Name

Iodine

EYE-eh-dine

Solid

Atomic Weight:

126.9

Atomic Number:

53

Orthorhombic

204.38
81
Tl
Thallium
204.38
Atomic Weight
81
Atomic No.

Tl

Thallium
Atomic Name

Thallium

THAL-i-em

Solid

Atomic Weight:

204.4

Atomic Number:

81

Hexagonal

207.2
82
Pb
Lead
207.2
Atomic Weight
82
Atomic No.

Pb

Lead
Atomic Name

Lead

LED

Solid

Atomic Weight:

207.2

Atomic Number:

82

Cubic: Face centered

208.98
83
Bi
Bismuth
208.98
Atomic Weight
83
Atomic No.

Bi

Bismuth
Atomic Name

Bismuth

BIZ-meth

Solid

Atomic Weight:

209.0

Atomic Number:

83

Rhombohedral

209
84
Po
Polonium
209
Atomic Weight
84
Atomic No.

Po

Polonium
Atomic Name

Polonium

peh-LOW-ni-em

Solid

Atomic Weight:

209.0

Atomic Number:

84

Monoclinic

210
85
At
Astatine
210
Atomic Weight
85
Atomic No.

At

Astatine
Atomic Name

Astatine

AS-teh-teen

Solid

Atomic Weight:

210.0

Atomic Number:

85

Unknown

286
113
Nh
Nihonium
286
Atomic Weight
113
Atomic No.

Nh

Nihonium
Atomic Name

Nihonium

nih-HOH-nee-əm

Unknown

Atomic Weight:

286.0

Atomic Number:

113

Unknown

289
114
Fl
Flerovium
289
Atomic Weight
114
Atomic No.

Fl

Flerovium
Atomic Name

Flerovium

flə-ROH-vee-əm

Unknown

Atomic Weight:

289.0

Atomic Number:

114

Unknown

289
115
Mc
Moscovium
289
Atomic Weight
115
Atomic No.

Mc

Moscovium
Atomic Name

Moscovium

mos-KOH-vee-əm

Unknown

Atomic Weight:

289.0

Atomic Number:

115

Unknown

293
116
Lv
Livermorium
293
Atomic Weight
116
Atomic No.

Lv

Livermorium
Atomic Name

Livermorium

LIV-ər-MOHR-ee-əm

Unknown

Atomic Weight:

293.0

Atomic Number:

116

Unknown

293
117
Ts
Tennessine
293
Atomic Weight
117
Atomic No.

Ts

Tennessine
Atomic Name

Tennessine

TEN-ə-seen

Unknown

Atomic Weight:

293.0

Atomic Number:

117

Unknown

18
4.003
2
He
Helium
4.003
Atomic Weight
2
Atomic No.

He

Helium
Atomic Name

Helium

HEE-li-em

Gas

Atomic Weight:

4.0

Atomic Number:

2

Hexagonal

20.18
10
Ne
Neon
20.18
Atomic Weight
10
Atomic No.

Ne

Neon
Atomic Name

Neon

NEE-on

Gas

Atomic Weight:

20.2

Atomic Number:

10

Cubic: Face centered

39.948
18
Ar
Argon
39.948
Atomic Weight
18
Atomic No.

Ar

Argon
Atomic Name

Argon

AR-gon

Gas

Atomic Weight:

39.9

Atomic Number:

18

Cubic: Face centered

83.798
36
Kr
Krypton
83.798
Atomic Weight
36
Atomic No.

Kr

Krypton
Atomic Name

Krypton

KRIP-ton

Gas

Atomic Weight:

83.8

Atomic Number:

36

Cubic: Face centered

131.293
54
Xe
Xenon
131.293
Atomic Weight
54
Atomic No.

Xe

Xenon
Atomic Name

Xenon

ZEE-non

Gas

Atomic Weight:

131.3

Atomic Number:

54

Cubic: Face centered

222
86
Rn
Radon
222
Atomic Weight
86
Atomic No.

Rn

Radon
Atomic Name

Radon

RAY-don

Gas

Atomic Weight:

222.0

Atomic Number:

86

Cubic: Face centered

294
118
Og
Oganesson
294
Atomic Weight
118
Atomic No.

Og

Oganesson
Atomic Name

Oganesson

OH-gə-NES-on

Gas

Atomic Weight:

294.0

Atomic Number:

118

Unknown

138.905
57
La
Lanthanum
138.905
Atomic Weight
57
Atomic No.

La

Lanthanum
Atomic Name

Lanthanum

LAN-the-nem

Solid

Atomic Weight:

138.9

Atomic Number:

57

Hexagonal

140.116
58
Ce
Cerium
140.116
Atomic Weight
58
Atomic No.

Ce

Cerium
Atomic Name

Cerium

SER-i-em

Solid

Atomic Weight:

140.1

Atomic Number:

58

Cubic: Face centered

140.908
59
Pr
Praseodymium
140.908
Atomic Weight
59
Atomic No.

Pr

Praseodymium
Atomic Name

Praseodymium

pra-si-eh-DIM-i-em

Solid

Atomic Weight:

140.9

Atomic Number:

59

Hexagonal

144.24
60
Nd
Neodymium
144.24
Atomic Weight
60
Atomic No.

Nd

Neodymium
Atomic Name

Neodymium

nee-eh-DIM-i-em

Solid

Atomic Weight:

144.2

Atomic Number:

60

Hexagonal

145
61
Pm
Promethium
145
Atomic Weight
61
Atomic No.

Pm

Promethium
Atomic Name

Promethium

pro-MEE-thi-em

Solid

Atomic Weight:

145.0

Atomic Number:

61

Hexagonal

150.36
62
Sm
Samarium
150.36
Atomic Weight
62
Atomic No.

Sm

Samarium
Atomic Name

Samarium

seh-MER-i-em

Solid

Atomic Weight:

150.4

Atomic Number:

62

Rhombohedral

151.964
63
Eu
Europium
151.964
Atomic Weight
63
Atomic No.

Eu

Europium
Atomic Name

Europium

yoo-RO-pi-em

Solid

Atomic Weight:

152.0

Atomic Number:

63

Cubic: Body centered

157.25
64
Gd
Gadolinium
157.25
Atomic Weight
64
Atomic No.

Gd

Gadolinium
Atomic Name

Gadolinium

GAD-eh-LIN-i-em

Solid

Atomic Weight:

157.3

Atomic Number:

64

Hexagonal

158.925
65
Tb
Terbium
158.925
Atomic Weight
65
Atomic No.

Tb

Terbium
Atomic Name

Terbium

TUR-bi-em

Solid

Atomic Weight:

158.9

Atomic Number:

65

Hexagonal

162.5
66
Dy
Dysprosium
162.5
Atomic Weight
66
Atomic No.

Dy

Dysprosium
Atomic Name

Dysprosium

dis-PRO-si-em

Solid

Atomic Weight:

162.5

Atomic Number:

66

Hexagonal

164.93
67
Ho
Holmium
164.93
Atomic Weight
67
Atomic No.

Ho

Holmium
Atomic Name

Holmium

HOLE-mi-em

Solid

Atomic Weight:

164.9

Atomic Number:

67

Hexagonal

167.259
68
Er
Erbium
167.259
Atomic Weight
68
Atomic No.

Er

Erbium
Atomic Name

Erbium

UR-bi-em

Solid

Atomic Weight:

167.3

Atomic Number:

68

Hexagonal

168.934
69
Tm
Thulium
168.934
Atomic Weight
69
Atomic No.

Tm

Thulium
Atomic Name

Thulium

THOO-li-em

Solid

Atomic Weight:

168.9

Atomic Number:

69

Hexagonal

173.045
70
Yb
Ytterbium
173.045
Atomic Weight
70
Atomic No.

Yb

Ytterbium
Atomic Name

Ytterbium

i-TUR-bi-em

Solid

Atomic Weight:

173.0

Atomic Number:

70

Cubic: Face centered

174.967
71
Lu
Lutetium
174.967
Atomic Weight
71
Atomic No.

Lu

Lutetium
Atomic Name

Lutetium

loo-TEE-shi-em

Solid

Atomic Weight:

175.0

Atomic Number:

71

Hexagonal

227
89
Ac
Actinium
227
Atomic Weight
89
Atomic No.

Ac

Actinium
Atomic Name

Actinium

ak-TIN-i-em

Solid

Atomic Weight:

227.0

Atomic Number:

89

Cubic: Face centered

232.038
90
Th
Thorium
232.038
Atomic Weight
90
Atomic No.

Th

Thorium
Atomic Name

Thorium

THOR-i-em

Solid

Atomic Weight:

232.0

Atomic Number:

90

Cubic: Face centered

231.036
91
Pa
Protactinium
231.036
Atomic Weight
91
Atomic No.

Pa

Protactinium
Atomic Name

Protactinium

PRO-tak-tin-eh-em

Solid

Atomic Weight:

231.0

Atomic Number:

91

Orthorhombic

238.029
92
U
Uranium
238.029
Atomic Weight
92
Atomic No.

U

Uranium
Atomic Name

Uranium

yoo-RAY-ni-em

Solid

Atomic Weight:

238.0

Atomic Number:

92

Orthorhombic

237
93
Np
Neptunium
237
Atomic Weight
93
Atomic No.

Np

Neptunium
Atomic Name

Neptunium

nep-TOO-ni-em

Solid

Atomic Weight:

237.0

Atomic Number:

93

Orthorhombic

244
94
Pu
Plutonium
244
Atomic Weight
94
Atomic No.

Pu

Plutonium
Atomic Name

Plutonium

ploo-TOE-ni-em

Solid

Atomic Weight:

244.0

Atomic Number:

94

Monoclinic

243
95
Am
Americium
243
Atomic Weight
95
Atomic No.

Am

Americium
Atomic Name

Americium

am-er-ISH-i-em

Solid

Atomic Weight:

243.0

Atomic Number:

95

Hexagonal

247
96
Cm
Curium
247
Atomic Weight
96
Atomic No.

Cm

Curium
Atomic Name

Curium

KYOOR-i-em

Solid

Atomic Weight:

247.0

Atomic Number:

96

Hexagonal

247
97
Bk
Berkelium
247
Atomic Weight
97
Atomic No.

Bk

Berkelium
Atomic Name

Berkelium

BURK-li-em

Solid

Atomic Weight:

247.0

Atomic Number:

97

Unknown

251
98
Cf
Californium
251
Atomic Weight
98
Atomic No.

Cf

Californium
Atomic Name

Californium

kal-eh-FOR-ni-em

Solid

Atomic Weight:

251.0

Atomic Number:

98

Unknown

252
99
Es
Einsteinium
252
Atomic Weight
99
Atomic No.

Es

Einsteinium
Atomic Name

Einsteinium

ine-STINE-i-em

Solid

Atomic Weight:

252.0

Atomic Number:

99

Unknown

257
100
Fm
Fermium
257
Atomic Weight
100
Atomic No.

Fm

Fermium
Atomic Name

Fermium

FER-mi-em

Solid

Atomic Weight:

257.0

Atomic Number:

100

Unknown

258
101
Md
Mendelevium
258
Atomic Weight
101
Atomic No.

Md

Mendelevium
Atomic Name

Mendelevium

men-deh-LEE-vi-em

Solid

Atomic Weight:

258.0

Atomic Number:

101

Unknown

259
102
No
Nobelium
259
Atomic Weight
102
Atomic No.

No

Nobelium
Atomic Name

Nobelium

no-BELL-i-em

Solid

Atomic Weight:

259.0

Atomic Number:

102

Unknown

262
103
Lr
Lawrencium
262
Atomic Weight
103
Atomic No.

Lr

Lawrencium
Atomic Name

Lawrencium

lor-ENS-i-em

Solid

Atomic Weight:

262.0

Atomic Number:

103

Unknown

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Understanding the Periodic Table

How to Read the Periodic Table

Periods

Left to Right ⇆

Periods are the rows of the periodic table that from left to right increase in order of mass. As you go along periods the number of protons and neutrons increases and the number of electron shells remains the same.

1
2
3
4
5
6
7

Groups

Top to bottom ⇅

Groups are the columns of the periodic table with elements that are grouped together with similar properties.

Learn more
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

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