if d+2 would react with e-1, what do you predict to be the formula? d2e2 2de de2 d2e

Explanation:

Step1: Determine charge - balance principle

In a chemical formula, the total positive charge must equal the total negative charge.

Step2: Analyze ion charges

Ion $D^{+ 2}$ has a charge of +2 and ion $E^{-1}$ has a charge of - 1.

Step3: Find the ratio of ions

To balance the charges, we need 2 ions of $E^{-1}$ for every 1 ion of $D^{+2}$. So the formula is $DE_{2}$.

Answer:

C. $DE_{2}$