26
Tabela periódica dos elementos
Período
↓
1
2
3
4
5
6
7
8
Grupo
9
Fe
55,845
(1,9)
10
11
← Número atômico
← Símbolo
← Massa atômica (número de massa do isótopo mais estável, quando entre parênteses)
← Eletronegatividade (escala de Pauling)
12
13
14
15
16
17
1
1
He
1,008
(2,2)
4,0026
8
9
10
N
O
F
Ne
6,94
(1,0)
9,0122
(1,6)
10,81
(2,0)
12,011
(2,6)
14,007
(3,0)
15,999
(3,4)
18,998
(4,0)
20,180
Na
Mg
Al
13
14
15
16
S
Cl
Ar
22,990
(0,9)
24,305
(1,3)
26,982
(1,6)
28,085
(1,9)
30,974
(2,2)
32,06
(2,6)
35,45
(3,2)
39,948
12
20
21
22
23
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga
Ge
As
Se
Br
Kr
39,098
(0,8)
40,078
(1,0)
44,956
(1,4)
47,867
(1,5)
50,942
(1,6)
51,996
(1,7)
54,938
(1,6)
55,845
(1,9)
58,933
(1,9)
58,693
(1,9)
63,546
(2,0)
65,38
(1,7)
69,723
(1,8)
72,63
(2,0)
74,922
(2,2)
78,96
(2,6)
79,904
(3,0)
83,798
(3,0)
36
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
52
53
I
Xe
85,468
(0,8)
83,62
(1,0)
88,906
(1,2)
91,224
(1,3)
92,906
(1,6)
95,96
(2,2)
(98)
(1,9)
101,07
(2,2)
102,91
(2,3)
106,42
(2,2)
107,87
(1,9)
112,41
(1,7)
114,82
(1,8)
118,71
(1,9)
121,76
(2,0)
127,60
(2,1)
126,90
(2,7)
131,29
(2,6)
81
82
83
84
Ba
La
Hf
Ta
W
Re
Os
76
77
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
132,91
(0,8)
137,33
(0,9)
138,91
(1,1)
178,49
(1,3)
180,95
(1,5)
183,84
(2,4)
186,21
(1,9)
190,23
(1,9)
192,22
(2,2)
195,08
(2,3)
196,97
(2,5)
200,59
(2,0)
204,38
(1,8)
207,2
(2,1)
208,98
(2,0)
(209)
(2,0)
(210)
(2,2)
(222)
Fr
Ra
Ac
89
104
Rf
Db
105
106
107
108
109
110
111
Rg
Cn
112
114
116
(223)
(0,7)
(226)
(0,9)
(227)
(1,1)
(265)
(268)
(271)
(270)
(277)
(276)
(281)
(280)
(285)
(289)
(292)
58
Lantanídeos
60
61
Bh
62
Hs
63
Mt
64
Ds
65
66
67
Fl
68
69
70
71
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
140,12
(1,1)
140,91
(1,1)
144,24
(1,1)
(145)
(1,2)
150,36
(1,2)
151,96
(1,2)
157,25
(1,2)
158,93
(1,2)
160,50
(1,2)
164,93
(1,2)
167,26
(1,2)
168,93
(1,3)
173,05
(1,1)
174,97
(1,3)
93
94
95
96
97
98
99
100
86
Lv
Ce
90
Actinídeos
59
Sg
85
54
Cs
88
80
51
35
Mo
79
50
34
Nb
78
49
33
Zr
75
48
32
Y
74
47
31
39
73
46
30
38
72
45
29
Sr
57
44
28
Rb
56
43
27
18
Ti
42
26
17
Sc
41
25
P
Ca
40
24
Si
K
87
7
7
C
55
6
6
B
37
5
5
Be
19
4
4
Li
11
3
2
H
3
2
18
Th
Pa
91
92
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
101
102
103
232,04
(1,3)
231,04
(1,5)
238,03
(1,7)
(237)
(1,3)
(244)
(1,3)
(243)
(1,3)
(247)
(1,3)
(247)
(1,3)
(251)
(1,3)
(252)
(1,3)
(257)
(1,3)
(258)
(1,3)
(259)
(1,3)
(262)
(1,2)
No
Lr
Departamento de Química Inorgânica - Instituto de Química da Universidade Federal do Rio de Janeiro
MRS/RBF