Consider the elements : Cs ,Ne , I and F (a) Identify the element that exhibits only negative oxidation state. (b) Identify the element that exhibits only postive oxidation state. (c) Identify the element that exhibits both positive and negative oxidation states. (d) Identify the element which exhibits neither the negative nor does the positive oxidation state.

Consider the elements : Cs ,Ne , I and F (a) Identify the element tha

1.	Consider the elements : Cs ,Ne , I and F (a) Identify the element that exhibits only negative oxidation state. (b) Identify the element that exhibits only postive oxidation state. (c) Identify the element that exhibits both positive and negative oxidation states. (d) Identify the element which exhibits neither the negative nor does the positive oxidation state.
Answer» Solution :I. It is a halogen and contains seven electrons in its VALENCE shell. Therefore, it exhibits an OXIDATION state of -1. However, DUE to the presence of d-orbitals, it ALSO exhibits +1, +3, +5 and +7 oxidation states.