Viết phương trình biểu diễn sự hình thành các ion sau đây từ các nguyên tử tương ứng:
\(\eqalign{& {\rm{a)}}\,\,{\rm{Na}}\,\, \to \,\,{\rm{N}}{{\rm{a}}^ + }\,\,\,\,\,\,\,\,\,;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,d)\,\,Cl\,\, \to \,\,C{l^ – } \cr& b)\,\,Mg\,\, \to \,\,M{g^{2 + }}\,\,\,\,\,;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,e)\,\,S\,\, \to {S^{2 – }} \cr& c)\,\,Al\,\, \to \,\,A{l^{3 + }}\,\,\,\,\,\,\,\,\,\,;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,f)\,\,O\,\, \to {O^{2 – }} \cr} \)
\(\eqalign{ & {\rm{a)}}\,\,{\rm{Na}}\,\, \to \,\,{\rm{N}}{{\rm{a}}^ + } + 1e;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,d)\,\,Cl + 1e\,\, \to \,\,C{l^ – } \cr & b)\,\,Mg\,\, \to \,\,M{g^{2 + }} + 2e;\,\,\,\,\,\,\,\,\,\,\,e)\,\,S + 2e\,\, \to {S^{2 – }} \cr & c)\,\,Al\,\, \to \,\,A{l^{3 + }} + 3e;\,\,\,\,\,\,\,\,\,\,\,\,\,\,f)\,\,O + 2e\,\, \to {O^{2 – }} \cr} \)