Grupp →
↓ Period
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1
1
H
Väte
1.00794
Upptäcktes
Smältpunkt
Kokpunkt
Elektroner per skal
Elektronkonfiguration
2
He
Helium
4.002602
2
3
Li
Litium
6.941
4
Be
Beryllium
9.012182
5
B
Bor
10.811
6
C
Kol
12.0107
7
N
Kväve
14.0067
8
O
Syre
15.9994
9
F
Fluor
18.9984032
10
Ne
Neon
20.1797
3
11
Na
Natrium
22.98976928
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.9815386
14
Si
Kisel
28.0855
15
P
Fosfor
30.973762
16
S
Svavel
32.065
17
Cl
Klor
35.453
18
Ar
Argon
39.948
4
19
K
Kalium
39.0983
20
Ca
Kalcium
40.078
21
Sc
Skandium
44.955912
22
Ti
Titan
47.867
23
V
Vanadin
50.9415
24
Cr
Krom
51.9961
25
Mn
Mangan
54.938045
26
Fe
Järn
55.845
27
Co
Kobolt
58.933195
28
Ni
Nickel
58.6934
29
Cu
Koppar
63.546
30
Zn
Zink
65.38
31
Ga
Gallium
69.723
32
Ge
Germanium
72.63
33
As
Arsenik
74.9216
34
Se
Selen
78.96
35
Br
Brom
79.904
36
Kr
Krypton
83.798
5
37
Rb
Rubidium
85.4678
38
Sr
Strontium
87.62
39
Y
Yttrium
88.90585
40
Zr
Zirkonium
91.224
41
Nb
Niob
92.90638
42
Mo
Molybden
95.96
43
Tc
Teknetium
[98]
44
Ru
Rutenium
101.07
45
Rh
Rodium
102.9055
46
Pd
Palladium
106.42
47
Ag
Silver
107.8682
48
Cd
Kadmium
112.411
49
In
Indium
114.818
50
Sn
Tenn
118.71
51
Sb
Antimon
121.76
52
Te
Tellur
127.6
53
I
Jod
126.90447
54
Xe
Xenon
131.293
6
55
Cs
Cesium
132.9054519
56
Ba
Barium
137.327
*
72
Hf
Hafnium
178.49
73
Ta
Tantal
180.94788
74
W
Volfram
183.84
75
Re
Rhenium
186.207
76
Os
Osmium
190.23
77
Ir
Iridium
192.217
78
Pt
Platina
195.084
79
Au
Guld
196.966569
80
Hg
Kvicksilver
200.59
81
Tl
Tallium
204.3833
82
Pb
Bly
207.2
83
Bi
Vismut
208.9804
84
Po
Polonium
[210]
85
At
Astat
[210]
86
Rn
Radon
[222]
7
87
Fr
Francium
[223]
88
Ra
Radium
[226]
**
104
Rf
Rutherfordium
[267]
105
Db
Dubnium
[268]
106
Sg
Seaborgium
[269]
107
Bh
Bohrium
[270]
108
Hs
Hassium
[269]
109
Mt
Meitnerium
[278]
110
Ds
Darmstadtium
[281]
111
Rg
Röntgenium
[281]
112
Cn
Copernicium
[285]
113
Nh
Nihonium
[286]
114
Fl
Flerovium
[289]
115
Mc
Moscovium
[288]
116
Lv
Livermorium
[293]
117
Ts
Tenness
[294]
118
Og
Oganesson
[294]
* Lantanoider
57
La
Lantan
138.90547
58
Ce
Cerium
140.116
59
Pr
Praseodym
140.90765
60
Nd
Neodym
144.242
61
Pm
Prometium
[145]
62
Sm
Samarium
150.36
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.25
65
Tb
Terbium
158.92535
66
Dy
Dysprosium
162.5
67
Ho
Holmium
164.93032
68
Er
Erbium
167.259
69
Tm
Tulium
168.93421
70
Yb
Ytterbium
173.054
71
Lu
Lutetium
174.9668
** Aktinider
89
Ac
Aktinium
[227]
90
Th
Torium
232.03806
91
Pa
Protaktinium
231.03588
92
U
Uran
238.02891
93
Np
Neptunium
[237]
94
Pu
Plutonium
[244]
95
Am
Americium
[243]
96
Cm
Curium
[247]
97
Bk
Berkelium
[247]
98
Cf
Californium
[251]
99
Es
Einsteinium
[252]
100
Fm
Fermium
[257]
101
Md
Mendelevium
[258]
102
No
Nobelium
[259]
103
Lr
Lawrencium
[262]
Alkalimetaller
Alkaliska jordmetaller
Övergångsmetaller
Posttransitionsmetaller
Icke-metaller
Metalloid
Halogener
Ädelgaser
Lantanoider
Aktinider