Answer :
1.) [tex]Ca^{2+}+2Cl^-\rightarrow CaCl_2[/tex]
Calcium has 2 valence electrons and chlorine has 7 valence electrons. For neutral molecule, 2 chlorine atoms share their valence electrons with 1 calcium atom. The bonds are formed between the calcium and chlorine atom.
2.) [tex]Al^{3+}+3F^-\rightarrow AlF_3[/tex]
Aluminium has 3 valence electrons and fluorine has 7 valence electrons. For neutral molecule, 3 fluorine atoms share their valence electrons with 1 aluminium atom. The bonds are formed between the aluminium and fluorine atom.
3.) [tex]H^{+}+Cl^-\rightarrow HCl[/tex]
Hydrogen has 1 valence electron and chlorine has 7 valence electrons. For neutral molecule, 1 chlorine atom share their valence electrons with 1 hydrogen atom. The bonds are formed between the hydrogen and chlorine atom.
4.) [tex]2H^{+}+S^{2-}\rightarrow H_2S[/tex]
Hydrogen has 1 valence electron and sulfur has 6 valence electrons. For neutral molecule, 2 hydrogen atoms share their valence electrons with 1 sulfur atom. The bonds are formed between the hydrogen and sulfur atom.
5.) [tex]Cl^{-}+Cl^-\rightarrow Cl_2[/tex]
Chlorine has 7 valence electrons. For neutral molecule, 1 chlorine atom share their valence electrons with 1 chlorine atom. The bonds are formed between chlorine and chlorine atom.
The lewis-dot structure image is shown below.
