Nuclear Chemistry

Step 1: Understanding the Reaction.
In the given reaction, is reduced to aluminum (Al). The reduction of aluminum requires a charge based on the number of moles of aluminum being formed.
Step 2: Calculating the Total Charge.
The number of moles of electrons required to reduce aluminum is 3 moles of electrons per mole of Al (as per the half-reaction: ). For 2/3 moles of , the total charge required is:
Step 3: Conclusion.
The correct answer is (B) .