how many valance electrons do Bromine have

seven

To determine the number of valence electrons that bromine (Br) has, you can refer to its position on the periodic table. Bromine is located in Group 17 of the periodic table, also known as the halogens, which means it has 7 valence electrons.

Each group number on the periodic table represents the number of valence electrons for elements in that group. In the case of Group 17, the elements within that group all have 7 valence electrons, including bromine.

Therefore, bromine has 7 valence electrons.