Final answer:
The correct formula for Chromium (II) Nitrate is Cr(NO3)2, which consists of a Chromium ion with a +2 charge and two nitrate ions.
Step-by-step explanation:
The correct formula for the compound Chromium (II) Nitrate is Cr(NO3)2. In this formula, Cr represents Chromium with a +2 oxidation state, and (NO3)2 represents two nitrate ions, each with a -1 charge. The charges balance out to create a neutral compound.