The Periodic Table of Elements - NASA

The Periodic Table of Elements

1

H

HYDROGEN

1

3

4

6

C

Atomic Number = Number of Protons = Number of Electrons

Chemical Symbol 5

NON-METALS

6

7

8

9

2

He

HELIUM

4 10

Li Be

LITHIUM BERYLLIUM

7

9

CARBON

12

Chemical Name Atomic Weight = Number of Protons + Number of Neutrons*

B

BORON

11

C

CARBON

12

N

NITROGEN

14

O

OXYGEN

16

F

FLUORINE

19

Ne

NEON

20

11

12

13

14

15

16

17

18

Na Mg

Al Si P S Cl Ar

SODIUM MAGNESIUM

23

24

METALS

ALUMINUM SILICON PHOSPHORUS SULFUR

27

28

31

32

CHLORINE

35

ARGON

40

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

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

39

40

45

48

51

52

55

IRON

56

COBALT

59

NICKEL

59

COPPER

64

ZINC

65

GALLIUM GERMANIUM ARSENIC SELENIUM BROMINE KRYPTON

70

73

75

79

80

84

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

RUBIDIUM STRONTIUM YTTRIUM ZIRCONIUM NIOBIUM MOLYBDENUM TECHNETIUM RUTHENIUM RHODIUM PALLADIUM SILVER

85

88

89

91

93

96

98

101 103 106 108

CADMIUM

112

INDIUM

115

TIN

119

ANTIMONY TELLURIUM IODINE

122 128 127

XENON

131

55

56

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

Cs Ba

Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

CESIUM

133

BARIUM

137

HAFNIUM TANTALUM TUNGSTEN RHENIUM OSMIUM

178 181 184 186 190

IRIDIUM PLATINUM

192 195

GOLD

197

MERCURY THALLIUM

201 204

LEAD

207

BISMUTH POLONIUM ASTATINE

209 209 210

RADON

222

87

88

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

Fr Ra

Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

FRANCIUM RADIUM

223 226

RUTHERFORDIUM DUBNIUM SEABORGIUM BOHRIUM HASSIUM MEITNERIUM DARMSTADTIUM ROENTGENIUM COPERNICIUM NIHONIUM FLEROVIUM MOSCOVIUM LIVERMORIUM TENNESSINE OGANESSON

263 268 271 270 270 278 281 281 285 286 289 289 293 294 294

KEY

= Solid at room temperature = Liquid at room temperature

57

58

La Ce

LANTHANUM CERIUM

139 140

59

60

61

62

63

Pr Nd Pm Sm Eu

PRASEODYMIUM NEODYMIUM PROMETHIUM SAMARIUM EUROPIUM

141 144 145 150 152

64

65

Gd Tb

GADOLINIUM TERBIUM

157 159

66

67

Dy Ho

DYSPROSIUM HOLMIUM

163 165

68

Er

ERBIUM

167

69

Tm

THULIUM

169

70

71

Yb Lu

YTTERBIUM LUTETIUM

173 175

= Gas at room temperature = Radioactive = Artificially Made

89

Ac

ACTINIUM

227

90

Th

THORIUM

232

91

92

Pa U

PROTACTINIUM URANIUM

231 238

93

94

95

96

Np Pu Am Cm

NEPTUNIUM PLUTONIUM AMERICIUM CURIUM

237 244 243 247

97

98

99

100

Bk Cf Es Fm

BERKELIUM CALIFORNIUM EINSTEINIUM FERMIUM

247 251 252 257

101 102 103

Md No Lr

MENDELEVIUM NOBELIUM LAWRENCIUM

258 259 262

* The atomic weights listed on this Table of Elements have been rounded to the nearest whole number. As a result, this chart actually displays the mass number of a specific isotope for each element. An element's complete, unrounded atomic weight can be found on the It's Elemental website:



Last revised on June 8, 2016

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