____________________
calci
____________________
rubidi
Sr
____________________
Na
____________________
____________________
carboni
____________________
arsènic
Cs
____________________
Fr
____________________
____________________
magnesi
____________________
bari
N
____________________
K
____________________
____________________
alumini
Si
____________________
____________________
beril·li
____________________
estany
Sb
____________________
P
____________________
____________________
bor
____________________
plo
m
