What is the Frost circle diagram for the following molecule? Is it expected to be antiaromatic or aromatic?

(a) Include the electrons required to make the following partial Frost diagram for a five-membered ring representing an aromatic molecule. (b) Provide the structure that would correspond to it.

Construct the Frost circles for the cyclopentadienyl anion and cyclopentadienyl cation. What is their difference? 

Draw a molecular orbital diagram for the following compound using Frost circle and determine whether it is aromatic or antiaromatic.