Give the oxidation number of bromine in the following: Part 1 of 4 Oxidation number of bromine in \( \mathrm{CBr}_{4} \) is Part 2 of 4 Oxidation number of bromine in HBr is Part 3 of 4 Oxidation number of bromine in KBr is Part 4 of 4 Oxidation number of bromine in BrF is
