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Periodic Table of Elements

  • Classic
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  • Minimal
  • Discovery
  • State
  • Substance
  • Color
  • Hardcore
    Discovery and assignment
  • Atomic number
  • Symbol
  • Name
    RuEnLat
  • Discovered by
  • Year of discovery
  • Country of discovery
    Flag
    Electronic characteristics
  • Electronic configuration
  • Atomic radiuspmra
  • Covalent radiuspmrcov
  • First ionization energykJ/mol
  • Second ionization energykJ/mol
  • Third ionization energykJ/mol
  • Electron affinitykJ/molEea
  • ElectronegativitykJ/mol𝜒
  • Oxidation stateOS
  • Term symbol
    Physical characteristics
  • Melting point
    CFK
  • Enthalpy of fusionkJ/molΔH(fus)
  • Boiling point
    CFK
  • Densityg/cm3𝜌
  • Specific HeatJ/(kg•K)C
  • Thermal conductivityW/(m•K)k
  • Electrical conductivityS/mσ
  • State of matter
  • Poisson ratio
  • Brinell HardnessMPa
  • Mohs Hardness
  • Vickers HardnessMPa
  • Bulk ModulusGPa
  • Shear ModulusGPa
  • Young ModulusGPa
  • Molar volumem3/mol
    Nuclear characteristics
  • Atomic weightuma
  • RadioactivityA
  • Half-lifet1/2
    Simple substances’ characteristics
  • Crystal structure
  • Price per kg
    $
    log
  • Lattice Constantspm
  • Space Group Name
  • Color
    Natural compounds
  • Abundance in Earth’s crust%
  • Abundance in the Sun%
  • Abundance in seawaterkg/L
  • Abundance in human body%
  • Abundance in Universe%
  • Occurrence in nature
    View
  • Groups
    4IVB
  • Periods
  • Legend
  • Mendeleev’s portrait
  • Table header
  • Metallic character
  • Cell borders
  • Background
  • Cell

IA

1

H

Hydrogen

1.01

1s1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

VIIIA

1 Period

2

He

Helium

4

1s2

3

Li

Lithium

6.94

[He] 2s1

IIA

4

Be

Beryllium

9.01

[He] 2s2

 
 
 
 
 
 
 
 
 
 
 

IIIA

5

B

Boron

10.81

[He] 2s2 2p1

IVA

6

C

Carbon

12.01

[He] 2s2 2p2

VA

7

N

Nitrogen

14.01

[He] 2s2 2p3

VIA

8

O

Oxygen

15.99

[He] 2s2 2p4

VIIA

9

F

Fluorine

18.99

[He] 2s2 2p5

2

10

Ne

Neon

20.18

[He] 2s2 2p6

11

Na

Sodium

22.99

[Ne] 3s1

12

Mg

Magnesium

24.3

[Ne] 3s2

 
 
 
 
 
 
 
 
 
 
 
NonmetalsMetals

13

Al

Aluminum

26.98

[Ne] 3s2 3p1

14

Si

Silicon

28.08

[Ne] 3s2 3p2

15

P

Phosphorus

30.97

[Ne] 3s2 3p3

16

S

Sulfur

32.06

[Ne] 3s2 3p4

17

Cl

Chlorine

35.45

[Ne] 3s2 3p5

3

18

Ar

Argon

39.95

[Ne] 3s2 3p6

19

K

Potassium

39.1

[Ar] 4s1

20

Ca

Calcium

40.08

[Ar] 4s2

 

IIIB

21

Sc

Scandium

44.96

[Ar] 4s2 3d1

IVB

22

Ti

Titanium

47.87

[Ar] 4s2 3d2

VB

23

V

Vanadium

50.94

[Ar] 4s2 3d3

VIB

24

Cr

Chromium

51.99

[Ar] 4s1 3d5

VIIB

25

Mn

Manganese

54.94

[Ar] 4s2 3d5

26

Fe

Iron

55.85

[Ar] 4s2 3d6

VIIIB

27

Co

Cobalt

58.93

[Ar] 4s2 3d7

28

Ni

Nickel

58.69

[Ar] 4s2 3d8

IB

29

Cu

Copper

63.55

[Ar] 4s1 3d10

IIB

30

Zn

Zinc

65.38

[Ar] 4s2 3d10

31

Ga

Gallium

69.72

[Ar] 4s2 3d10 4p1

32

Ge

Germanium

72.63

[Ar] 4s2 3d10 4p2

33

As

Arsenic

74.92

[Ar] 4s2 3d10 4p3

34

Se

Selenium

78.97

[Ar] 4s2 3d10 4p4

35

Br

Bromine

79.9

[Ar] 4s2 3d10 4p5

4

36

Kr

Krypton

83.8

[Ar] 4s2 3d10 4p6

37

Rb

Rubidium

85.47

[Kr] 5s1

38

Sr

Strontium

87.62

[Kr] 5s2

 

39

Y

Yttrium

88.91

[Kr] 5s2 4d1

40

Zr

Zirconium

91.22

[Kr] 5s2 4d2

41

Nb

Niobium

92.91

[Kr] 5s1 4d4

42

Mo

Molybdenum

95.95

[Kr] 5s1 4d5

43

Tc

Technetium

(97)

[Kr] 5s2 4d5

44

Ru

Ruthenium

101.07

[Kr] 5s1 4d7

45

Rh

Rhodium

102.91

[Kr] 5s1 4d8

46

Pd

Palladium

106.42

[Kr] 4d10

47

Ag

Silver

107.87

[Kr] 5s1 4d10

48

Cd

Cadmium

112.41

[Kr] 5s2 4d10

49

In

Indium

114.82

[Kr] 5s2 4d10 5p1

50

Sn

Tin

118.71

[Kr] 5s2 4d10 5p2

51

Sb

Antimony

121.76

[Kr] 5s2 4d10 5p3

52

Te

Tellurium

127.6

[Kr] 5s2 4d10 5p4

53

I

Iodine

126.9

[Kr] 5s2 4d10 5p5

5

54

Xe

Xenon

131.29

[Kr] 5s2 4d10 5p6

55

Cs

Cesium

132.91

[Xe] 6s1

56

Ba

Barium

137.33

[Xe] 6s2

57—71

La

Lanthanides

 

 

Lu

 

 

 

72

Hf

Hafnium

178.49

[Xe] 6s2 4f14 5d2

73

Ta

Tantalum

180.95

[Xe] 6s2 4f14 5d3

74

W

Tungsten

183.84

[Xe] 6s2 4f14 5d4

75

Re

Rhenium

186.21

[Xe] 6s2 4f14 5d5

76

Os

Osmium

190.23

[Xe] 6s2 4f14 5d6

77

Ir

Iridium

192.22

[Xe] 6s2 4f14 5d7

78

Pt

Platinum

195.08

[Xe] 6s1 4f14 5d9

79

Au

Gold

196.97

[Xe] 6s1 4f14 5d10

80

Hg

Mercury

200.59

[Xe] 6s2 4f14 5d10

81

Tl

Thallium

204.38

[Xe] 6s2 4f14 5d10 6p1

82

Pb

Lead

207.2

[Xe] 6s2 4f14 5d10 6p2

83

Bi

Bismuth

208.98

[Xe] 6s2 4f14 5d10 6p3

84

Po

Polonium

(209)

[Xe] 6s2 4f14 5d10 6p4

85

At

Astatine

(210)

[Xe] 6s2 4f14 5d10 6p5

6

86

Rn

Radon

(222)

[Xe] 6s2 4f14 5d10 6p6

87

Fr

Francium

(223)

[Rn] 7s1

88

Ra

Radium

(226)

[Rn] 7s2

89—103

Ac

Actinides

 

 

Lr

 

 

 

104

Rf

Rutherfordium

(267)

[Rn] 7s2 5f14 6d2

105

Db

Dubnium

(270)

[Rn] 7s2 5f14 6d3

106

Sg

Seaborgium

(269)

[Rn] 7s2 5f14 6d4

107

Bh

Bohrium

(270)

[Rn] 7s2 5f14 6d5

108

Hs

Hassium

(270)

[Rn] 7s2 5f14 6d6

109

Mt

Meitnerium

(278)

[Rn] 7s2 5f14 6d7

110

Ds

Darmstadtium

(281)

[Rn] 7s1 5f14 6d9

111

Rg

Roentgentium

(281)

[Rn] 7s1 5f14 6d10

112

Cn

Copernicium

(285)

[Rn] 7s2 5f14 6d10

113

Nh

Nihonium

(286)

[Rn] 7s2 5f14 6d10 7p1

114

Fl

Flerovium

(289)

[Rn] 7s2 5f14 6d10 7p2

115

Mc

Moscovium

(289)

[Rn] 7s2 5f14 6d10 7p3

116

Lv

Livermorium

(293)

[Rn] 7s2 5f14 6d10 7p4

117

Ts

Tennessine

(293)

[Rn] 7s2 5f14 6d10 7p5

7

118

Og

Oganesson

(294)

[Rn] 7s2 5f14 6d10 7p6

IIIB

57

La

Lanthanum

138.91

[Xe] 6s2 5d1

58

Ce

Cerium

140.12

[Xe] 6s2 4f1 5d1

59

Pr

Praseodymium

140.91

[Xe] 6s2 4f3

60

Nd

Neodymium

144.24

[Xe] 6s2 4f4

61

Pm

Promethium

(145)

[Xe] 6s2 4f5

62

Sm

Samarium

150.36

[Xe] 6s2 4f6

63

Eu

Europium

151.96

[Xe] 6s2 4f7

64

Gd

Gadolinium

157.25

[Xe] 6s2 4f7 5d1

65

Tb

Terbium

158.93

[Xe] 6s2 4f9

66

Dy

Dysprosium

162.5

[Xe] 6s2 4f10

67

Ho

Holmium

164.93

[Xe] 6s2 4f11

68

Er

Erbium

167.26

[Xe] 6s2 4f12

69

Tm

Thulium

168.93

[Xe] 6s2 4f13

70

Yb

Ytterbium

173.05

[Xe] 6s2 4f14

71

Lu

Lutetium

174.97

[Xe] 6s2 4f14 5d1

6

89

Ac

Actinium

(227)

[Rn] 7s2 6d1

90

Th

Thorium

232.04

[Rn] 7s2 6d2

91

Pa

Protactinium

231.04

[Rn] 7s2 5f2 6d1

92

U

Uranium

238.03

[Rn] 7s2 5f3 6d1

93

Np

Neptunium

(237)

[Rn] 7s2 5f4 6d1

94

Pu

Plutonium

(244)

[Rn] 7s2 5f6

95

Am

Americium

(243)

[Rn] 7s2 5f7

96

Cm

Curium

(247)

[Rn] 7s2 5f7 6d1

97

Bk

Berkelium

(247)

[Rn] 7s2 5f9

98

Cf

Californium

(251)

[Rn] 7s2 5f10

99

Es

Einsteinium

(252)

[Rn] 7s2 5f11

100

Fm

Fermium

(257)

[Rn] 7s2 5f12

101

Md

Mendelevium

(258)

[Rn] 7s2 5f13

102

No

Nobelium

(259)

[Rn] 7s2 5f14

103

Lr

Lawrencium

(262)

[Rn] 7s2 5f14 7p1

7
  • 19

    Atomic number

  • K

    Symbol

  • Potassium

    Name

  • 39.1

    u

    Atomic weight

  • [Ar] 4s1

    Electronic configuration

Atomic weight×