Arrange the following elements in order of their increasing non metallic character Li,O,C,Be ,F?

Q. Arrange the following elements in order of their increasing non metallic character Li,O,C,Be ,F?

A.            F<O<C<Be<Li

B.            Li<Be<C<O<F

C.            F<O<C<Be<Li

D.            F<O<Be<C<Li

Answer: F<O<C<Be<Li