CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding
Problem
Two diatomic species, X_{2} and Y_{2}, have potential-energy minima described below.
• X_{2}: minimum potential energy = −400 kJ mol^{−1} at 110 pm
• Y_{2}: minimum potential energy = −250 kJ mol^{−1} at 125 pm
Which statement is most consistent with these data?
(a) X2 has a longer but stronger bond than Y2.
(b) X2 and Y2 must have the same bond order because both are diatomic molecules.
(c) X2 has a shorter and stronger bond than Y2.
(d) X2 has a shorter but weaker bond than Y2.