The equilibrium dissociation energy of a diatomic molecule is 4.75 eV and its stretching frequency corresponds to 0.5 eV. The minimum energy required to dissociate the molecule in eV is
(a)4.75
(b)4.25
(c)4.50
(d)5.00
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
D₀ = D_e − ½hν = 4.75 − 0.25 = 4.50 eV (the molecule already has its zero-point energy).