N I K L Ni
C A D M I U M Cd
Z I N E K Zn
 
K R E M I K Si
T I T A N Ti
N I K L Ni
H E L I U M He
S I R A S
 
D R A S L I K K
R T U T Hg
A R G O N Ar
A S T A T At
S E L E N Se
C I N Sn
 
?