Which of the following statements is true about a molecule with a bond order of one?

• A. It contains a single bond between two atoms.
• B. It contains a double bond between two atoms.
• C. It contains no bond between the atoms.
• D. It contains a triple bond between two atoms.

Answer: (A)

Verified step by step guidance

1. Understand that bond order is a measure of the number of chemical bonds between a pair of atoms. It is calculated as the difference between the number of bonding electrons and antibonding electrons divided by two.
2. Recall the relationship between bond order and bond types: a bond order of 1 corresponds to a single bond, a bond order of 2 corresponds to a double bond, and a bond order of 3 corresponds to a triple bond.
3. Recognize that a bond order of zero means no bond exists between the atoms, as there are equal numbers of bonding and antibonding electrons.
4. Apply this knowledge to the given options and identify that a bond order of one means the molecule contains a single bond between two atoms.
5. Conclude that the correct statement is: 'It contains a single bond between two atoms.'