Which member of the halogen family (X) does not show oxidation state of +1?

Options

A. Fluorine
B. Bromine
C. Chlorine
D. Iodine

Answer

A

Explanation

Since fluorine is most electronegative element, so it always shows the oxidation state of (-I). With CI, Br and I the oxidation state may be positíve or negative, depending on which atom in the molecule has greater electronegativity. Covalence of one is most common for CI, Br and I, CI, Br and I also exhibit higher valencies, with oxidation states of +1, +3, +5 and +7.