 |
|
1s |
1.0
H
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
4.0
He
2 |
|
|
|
|
|
|
|
|
|
|
|
|
2s |
6.9
Li
3 |
9.0
Be
4 |
2p |
10.8
B
5 |
12.0
C
6 |
14.0
N
7 |
16.0
O
8 |
19.0
F
9 |
20.2
Ne
10 |
|
|
3s |
23.0
Na
11 |
24.3
Mg
12 |
3p |
27.0
Al
13 |
28.1
Si
14 |
31.0
P
15 |
32.1
S
16 |
35.5
Cl
17 |
39.9
Ar
18 |
|
|
4s |
39.1
K
19 |
40.1
Ca
20 |
3d |
45.0
Sc
21 |
47.9
Ti
22 |
50.9
V
23 |
52.0
Cr
24 |
54.9
Mn
25 |
55.8
Fe
26 |
58.9
Co
27 |
58.7
Ni
28 |
63.5
Cu
29 |
65.4
Zn
30 |
4p |
69.7
Ga
31 |
72.6
Ge
32 |
74.9
As
33 |
79.0
Se
34 |
79.9
Br
35 |
83.8
Kr
36 |
|
|
5s |
85.5
Rb
37 |
87.6
Sr
38 |
4d |
88.9
Y
39 |
91.2
Zr
40 |
92.9
Nb
41 |
95.9
Mo
42 |
(99)
Tc
43 |
101.1
Ru
44 |
102.9
Rh
45 |
106.4
Pd
46 |
107.9
Ag
47 |
112.4
Cd
48 |
5p |
114.8
In
49 |
118.7
Sn
50 |
121.8
Sb
51 |
127.6
Te
52 |
126.9
I
53 |
131.3
Xe
54 |
|
|
6s |
132.9
Cs
55 |
137.3
Ba
56 |
5d |
138.9
La
57 |
* |
178.5
Hf
72 |
181.0
Ta
73 |
183.9
W
74 |
186.2
Re
75 |
190.2
Os
76 |
192.2
Ir
77 |
195.1
Pt
78 |
197.0
Au
79 |
200.6
Hg
80 |
6p |
204.4
Tl
81 |
207.2
Pb
82 |
209.0
Bi
83 |
(210)
Po
84 |
(210)
At
85 |
(222)
Rn
86 |
|
|
7s |
(223)
Fr
87
|
(226)
Ra
88
|
6d |
(227)
Ac
89
|
! |
(261)
Rf
104
|
(262)
Db
105
|
(263)
Sg
106
|
(262)
Bh
107
|
(265)
Hs
108
|
(266)
Mt
109
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mean atomic mass
Element
Atomic
number |
*
Lanthanides |
140.1
Ce
58 |
140.9
Pr
59 |
144.2
Nd
60 |
(147)
Pm
61 |
150.4
Sm
62 |
152.0
Eu
63
|
157.3
Gd
64
|
158.9
Tb
65
|
162.5
Dy
66
|
164.9
Ho
67
|
167.3
Er
68
|
168.9
Tm
69
|
173.0
Yb
70
|
175.0
Lu
71
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
s
block |
d
block |
p
block |
f
block | |
|
!
Actinides |
232.0
Th
90 |
(231)
Pa
91 |
238.1
U
92 |
(237)
Np
93 |
(244)
Pu
94 |
(243)
Am
95 |
(247)
Cm
96 |
(247)
Bk
97
|
(251)
Cf
98 |
(252)
Es
99 |
(257)
Fm
100 |
(258)
Md
101 |
(259)
No
102 |
(260)
Lr
103 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| | |