question_answer 32)

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 positive oxidation state. (c) Identify the element that exhibits both positive and negative oxidation states. (d) Identify the element that exhibits neither the negative nor does the positive oxidation state.  

Answer:

(a) F (-1); It is the most electronegative element. (b) Cs (+1); It is the most electropositive element. (c) 1 (-1 to +7) (d) Ne; It is an element of zero group.