Potassium

(a)  

Kr

(a)  

copper

(a)  

Ni

(a)  

Fe

(a)  

H

(a)  

Na

(a)  

Calcium

(a)  

V

(a)  

Cobalt

(a)  

Ga

(a)  

germanium

(a)  

arsenic

(a)  

zinc

(a)  

manganese

(a)  

Ti

(a)  

Fe

(a)  

bromine

(a)  

Be

(a)  

Se

(a)  

Sc

(a)  

chromium

(a)  

Ga

(a)  

germanium

(a)  

C

(a)  

Lithium

(a)  

Si

(a)