1
I
Groups of
I
II
V
MENDELEEV'S PERIODIC
II
2
Li 3
Lithium
6.94
Be 4
Beryllium
9.0122
5 B
Boron
10.811
6 C
Carbon
12.01115
7 N
Nitrogen
14.0067
III
3
Na 11
Sodium
22.9898
Mg 12
Magnesium
24.305
13 Al
Aluminium
26.9815
14 Si
Silicon
28.086
15 P
Phosphorus
30.9376
IV
4
IC 19
Potassium
39.098
Ca 20
Calcium
40.08
Sc 21
Scandium
44.956
Ti 22
Titanium
47.90
V 23
Vanadium
50.942
5
29 Cu
Copper
63.546
30 Zn
Zinc
65.38
31 Ga
Gallium
69.72
32 Ge
Germanium
72.59
33 As
Arsenic
74.9216
V
6
Rb 37
Rubidium
85.47
Sr 38
Strontium
87.62
Y 39
Yttrium
88.906
Zr 40
Zirconium
91.22
Nb 41
Niobium
92.906
7
47 Ag
Silver
107.868
48 Cd
Cadmium
112.40
49 In
Indium
114.82
50 Sn
Tin
118.69
51 Sb
Antimony
121.75
VI
8
Cs 55
Cesium
132.905
Ba 56
Barium
137.34
La 57
Lanthanum
138.91
* Hf 72
t,
Hafnium
co
ko
178.49
Ta 73
Tantalum
180.948
9
79 Au
Gold
196.967
80 Hg
Mercury
200.59
81 Ti
Thallium
204.37
82 Pb
Lead
207.19
83 Bi
Bismuth
208.980
VII 1 0
Fr 87
Francium
[223]
Ra 88
Radium
226.0254
Ac 89
Actinium
[227]
* Ku 104
C.3
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
157.25
** 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]
I
Groups of
I
II
V
MENDELEEV'S PERIODIC
II
2
Li 3
Lithium
6.94
Be 4
Beryllium
9.0122
5 B
Boron
10.811
6 C
Carbon
12.01115
7 N
Nitrogen
14.0067
III
3
Na 11
Sodium
22.9898
Mg 12
Magnesium
24.305
13 Al
Aluminium
26.9815
14 Si
Silicon
28.086
15 P
Phosphorus
30.9376
IV
4
IC 19
Potassium
39.098
Ca 20
Calcium
40.08
Sc 21
Scandium
44.956
Ti 22
Titanium
47.90
V 23
Vanadium
50.942
5
29 Cu
Copper
63.546
30 Zn
Zinc
65.38
31 Ga
Gallium
69.72
32 Ge
Germanium
72.59
33 As
Arsenic
74.9216
V
6
Rb 37
Rubidium
85.47
Sr 38
Strontium
87.62
Y 39
Yttrium
88.906
Zr 40
Zirconium
91.22
Nb 41
Niobium
92.906
7
47 Ag
Silver
107.868
48 Cd
Cadmium
112.40
49 In
Indium
114.82
50 Sn
Tin
118.69
51 Sb
Antimony
121.75
VI
8
Cs 55
Cesium
132.905
Ba 56
Barium
137.34
La 57
Lanthanum
138.91
* Hf 72
t,
Hafnium
co
ko
178.49
Ta 73
Tantalum
180.948
9
79 Au
Gold
196.967
80 Hg
Mercury
200.59
81 Ti
Thallium
204.37
82 Pb
Lead
207.19
83 Bi
Bismuth
208.980
VII 1 0
Fr 87
Francium
[223]
Ra 88
Radium
226.0254
Ac 89
Actinium
[227]
* Ku 104
C.3
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
157.25
** 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]