👤

Citi electroni de valenta sint in atomii de :
a)hidrogen,oxigen,sulf,azot,carbon;
b)siliciu,fosfor,fluor,clor,brom,iod;


Răspuns :

a)hidrogen-monovalent,oxigen-divalent,sulf-divalent,azot-3,carbon-4
b)siliciu-4,fosfor-3,fluor-monovalent,clor-monovalent,brom-monovalent,iod-monovalent