Final answer:
The correct formula for Chromium (II) Nitrate is Cr(NO₃)₂, as it balances the +2 charge of Chromium (II) with two -1 charge nitrate ions. Option D is correct.
Step-by-step explanation:
The correct formula for Chromium (II) Nitrate is d. Cr(NO₃)₂. To determine the formula of an ionic compound, you must balance the charges of the cations (positively charged ions) and anions (negatively charged ions). Chromium (II) indicates that chromium has a +2 charge. Nitrate, NO₃⁻, has a -1 charge. To balance the charges, you need two nitrate ions to balance the +2 charge of one chromium ion, resulting in the formula Cr(NO₃)₂.
The correct formula for the compound Chromium (II) Nitrate is d. Cr(NO₃)₂.
In this compound, Chromium has a +2 charge and Nitrate has a -1 charge. To balance the charges, we need two Nitrate ions to combine with one Chromium ion. The formula Cr(NO₃)₂ represents this combination.