Final answer:
The bond order of the Mg₂⁺ molecule is 1.
Step-by-step explanation:
The bond order of the Mg₂⁺ molecule can be determined by calculating the difference in the number of bonding and antibonding electrons. In this case, Mg₂⁺ has a bond order of 2. The bond order can be calculated using the formula:
Bond order = (Number of bonding electrons - Number of antibonding electrons) / 2
In Mg₂⁺, there are 4 bonding electrons and 2 antibonding electrons:
Bond order = (4 - 2) / 2 = 1