Step 1: Understand what bond order means. Bond order is a way to measure the strength and stability of a bond between two atoms.
Step 2: Know the formula for calculating bond order: (Number of bonding electrons - Number of antibonding electrons) / 2.
Step 3: Identify the molecule in question, which is He2 (a molecule made of two helium atoms).
Step 4: Determine the number of bonding and antibonding electrons in He2. Helium has 2 electrons, so in He2, there are 2 bonding electrons and 2 antibonding electrons.
Step 5: Plug the numbers into the bond order formula: (2 bonding electrons - 2 antibonding electrons) / 2.
Step 6: Calculate: (2 - 2) / 2 = 0 / 2 = 0.
Step 7: Conclude that He2 has a bond order of 0, meaning it does not have a stable bond.
