Synthetic Inorganic Chemistry

THE PEEIODIC AERANGEMENT ACCOEDING TO ELECTEON GEOUPINGS

He 2

Ne 2-8

A 2-8-8

Ni0 2-8-18

Kr 2-8-18-8

Pda 2-8-18-18

Xe 2-8-18-18-S
i
ErjS 2-8-18-32-8

Pt/J 2-8-18-32-18

Nt 2-8-18-32-18-8

0

2

He

10

Ne

18

A

28

Ni/J

36

Kr

46

Pd0

54

Xe

68

Er/J

78

Pt/J

86

Nt

1

H

3

Li

11

Na

19

K

29

Cu

37

Eb

47

Ag

55

Cs

79

Au

87

4

Be

12

Mg

20

Ca

30

Zn

38

Sr

48

Cd

56

Ba

80

Hg

88

Ea

5

B

13

Al

21

Sc 31

Ga

39

Y

49

In

57

La

71

Lu

81

Tl

89

Ac

6

C

14

Si

22

Ti

32

Ge

40

Zr

50

Sn

58

Ce

72

Hf

82

Pb

90

Th

7

N

15

P

23

V

33

As

41

Cb

51

Sb

69

Pr

73

Ta

83

Bi

91

Pa

8

O

16

S

Cr

34

Se

W

Mo

52

Te

60

Nd

n

w

84

RaF

92

U

1

H

9

F

17

Cl

25

Mn

35

Br

43

Ma

53

I

61

11

75

Re

85

2

He

10

Ne

18

A

26

Fe 36

Kr

44

Ru

54

Xe

62

Sa

76

Os

86

Nt

27

Co^28

Ni

46

Rh

46

Pd

63

Eu

77

Ir

64

Gd

78

Pt

65

Tb

66

Dy

67

Ho

68

Er

69

Tm

70

Yb

3

o

Symbol printed in heavy type — the kernel never acquires the structure of an inert gas or a beta kernel
Symbol printed in italics — the kernel sometimes acquires the structure of an inert gas or a beta kernel
Symbol printed in ordinary type — the kernel usually or invariably has the structure of an inert gas or a beta kernel
Elements 43, Masurium; 61, Illinium; 84, Polonium or Radium F; 89, Actinium; 91, Uranium Xa do not appear in the
atomic weight tables. Although their existence has been indicated by means of X-rays or radioactive properties, they have
not been isolated in amounts to allow of atomic weight determmation.

CO