Irodov – Problems in General Physics

I^1

Groups of

I II V

MENDELEEV'S PERIODIC

II 2

Li 3

Lithium

6.

Be 4

Beryllium

9.

5 B

Boron

10.

6 C

Carbon

12.

7 N

Nitrogen

14.

III^3

Na 11

Sodium

22.

Mg 12

Magnesium

24.

13 Al

Aluminium

26.

14 Si

Silicon

28.

15 P

Phosphorus

30.

IV

4

IC 19

Potassium

39.

Ca 20

Calcium

40.

Sc 21

Scandium

44.

Ti 22

Titanium

47.

V 23

Vanadium

50.

5

29 Cu

Copper

63.

30 Zn

Zinc

65.

31 Ga

Gallium

69.

32 Ge

Germanium

72.

33 As

Arsenic

74.

V

6

Rb 37

Rubidium

85.

Sr 38

Strontium

87.

Y 39

Yttrium

88.

Zr 40

Zirconium

91.

Nb 41

Niobium

92.

7

47 Ag

Silver

107.

48 Cd

Cadmium

112.

49 In

Indium

114.

50 Sn

Tin

118.

(^51) Sb
Antimony
121.
VI
8
Cs 55
Cesium
132.
Ba 56
Barium
137.
La 57
Lanthanum
138.

• Hf 72
  t, Hafnium
  co ko

178. Ta 73
     Tantalum


179. 
     

     9
     79 Au
     Gold

     
     


180. 
     

     80 Hg
     Mercury

     
     


181. 
     

     (^81) Ti
     Thallium

     
     


182. 
     

     82 Pb
     Lead

     
     


183. 
     

     83 Bi
     Bismuth

     
     


184. 
     

     VII 1 0
     Fr 87
     Francium
     [223]
     Ra 88
     Radium

     
     


185. 
     

     Ac 89
     Actinium
     [227]

     
     

• Ku 104 C.
  (^2) Kurchatovium
  c; a [261]
  105


• LANTHANI
  Ce 58 Pr 59 Nd 60 Pm 61 Sm 62 Eu 63 Gd^64
  Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium
  140.12 140.907 144.24 [145] 150.35 151.96 157.
  ** ACTINI
  Th 90 Pa 91 U 92 Np 93 Pu 94 Am 95 Cm 96
  Thorium Protactinium Uranium Neptunium Plutonium Americium Curium
  232.038 231.0359 238.03 [237] [244] [243] [247]