Potential-energy data for three different C–C bonds are given below.
• Curve P: minimum at 154 pm and –348 kJ·mol⁻¹
• Curve Q: minimum at 134 pm and –614 kJ·mol⁻¹
• Curve R: minimum at 120 pm and –838 kJ·mol⁻¹
Which sequence lists the curves in order of decreasing bond order (highest bond order first)?
a) R>P>Q
b) P>Q>R
c) R>Q>P
d) Q>R>P