Bài 1 trang 95 SGK Hóa học 10 Nâng cao

Đề bài

Viết phương trình biểu diễn sự hình thành các ion sau đây từ các nguyên tử tương ứng:

\(\eqalign{& {\rm{a)}}\,\,{\rm{Na}}\,\, \to \,\,{\rm{N}}{{\rm{a}}^ + }\,\,\,\,\,\,\,\,\,;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,d)\,\,Cl\,\, \to \,\,C{l^ - }  \cr& b)\,\,Mg\,\, \to \,\,M{g^{2 + }}\,\,\,\,\,;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,e)\,\,S\,\, \to {S^{2 - }}  \cr& c)\,\,Al\,\, \to \,\,A{l^{3 + }}\,\,\,\,\,\,\,\,\,\,;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,f)\,\,O\,\, \to {O^{2 - }} \cr} \)

Hướng dẫn giải

\(\eqalign{  & {\rm{a)}}\,\,{\rm{Na}}\,\, \to \,\,{\rm{N}}{{\rm{a}}^ + } + 1e;\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,d)\,\,Cl + 1e\,\, \to \,\,C{l^ - }  \cr  & b)\,\,Mg\,\, \to \,\,M{g^{2 + }} + 2e;\,\,\,\,\,\,\,\,\,\,\,e)\,\,S + 2e\,\, \to {S^{2 - }}  \cr  & c)\,\,Al\,\, \to \,\,A{l^{3 + }} + 3e;\,\,\,\,\,\,\,\,\,\,\,\,\,\,f)\,\,O + 2e\,\, \to {O^{2 - }} \cr} \)