He
Helio
4,0026
F
Flúor
18,998
Ne
Neón
20,180
Cl
Cloro
35,45
Ar
Argón
39,948
Br
Bromo
79,904
Kr
Kriptón
83,798(2)
I
Yodo
126,90
Xe
Xenón
131,29
* *
At
Astato
[210]
Rn
Radón
[222]
* *
Ts
Teneso
[294]
Og
Oganesón
[294]
La
Lantano
138,91
Ce
Cerio
140,12
Pr
Praseodimio
140,91
Nd
Neodimio
144,24
Pm
Prometio
[145]
Sm
Samario
150,36(2)
Eu
Europio
151,96
Gd
Gadolinio
157,25(3)
Tb
Terbio
158,93
Dy
Disprosio
162,50
Ho
Holmio
164,93
Er
Erbio
167,26
Tm
Tulio
168,93
Yb
Iterbio
173,05
Lu
Lutecio
174,97
Acs
Actinio
[227]
Th
Torio
232,04
Pa
Protactinio
231,04
U
Uranio
238,03
Np
Neptunio
[237]
Pu
Plutonio
[244]
Am
Americio
[243]
Cm
Curio
[247]
Bk
Berkelio
[247]
Cf
Californio
[251]
Es
Einstenio
[252]
Fm
Fermio
[257]
MD
Mendelevio
[258]
No
Nobelio
[259]
Lr
Laurencio
[262]