The element fluorine is in group 17 of the periodic table, which is also known as the halogen group, and has a valency of 1. So, all the elements in the halogen group will have a valency equal to 1.
The element fluorine is in group 17 of the periodic table, which is also known as the halogen group, and has a valency of 1. So, all the elements in the halogen group will have a valency equal to 1.