Răspuns:
a.cu-cupru,n-azot,o-oxigen,s-sulf,cu-cupru,te-telur
b.f-fluor,er-erbiu,i-iod,c-carbon,i-iod,te-telur
c.al-aluminiu,u-uraniu,ne-neon
d.c-carbon,o-oxigen,s-sulf,er-erbiu,v-vanadiu, ar-argon,re-reniu
e.ca-calciu,p-fosfor,ca-calciu,na-sodiu
f.xe-xenon,no-nobeliu,f-fluor,o-oxigen,b-bor
g.b-bor,u-uraniu,ni-nichel,ca-calciu
h.ni-nichel,co-cobalt,v-vanadiu,al-aluminiu,la-lantan
