Each Atom Wants 8 Valence Electrons Chlorine is similar to fluorine:(1s)2(2s)2(2p)6(3s)2(3p)5 Valence level is now 3,but number of valence electrons is still 7.So,the structure is: We can also make Cl2::cl·+.Ci:一：Ci:Ci: Same thing with Br2,12,and the other column VII elements: Br:Br:> which can be rewritten as:Br-Br: The purple line is a single bond,and it stands for 2 electrons If each atom has eight dots,then the molecule is stable V-6Each Atom Wants 8 Valence Electrons Chlorine is similar to fluorine: (1s)2 (2s)2 (2p)6 (3s)2 (3p)5 Valence level is now 3, but number of valence electrons is still 7. So, the structure is: Cl We can also make Cl2: Cl + Cl Cl Cl Same thing with Br2, I2, and the other column VII elements: Br Br which can be rewritten as: Br Br The purple line is a single bond, and it stands for 2 electrons If each atom has eight dots, then the molecule is stable V-6