Which of the following is equal to the minimum kinetic energy needed by a hydrogen atom in ground state to produce a photon after collision with another identical hydrogen atom at rest?

Step-by-step solution

Minimum energy transferred in the form of proton =-13.6 ( 1 2^2 - 1 1^2 )= 3 4 13.6 ev . aligned & from COE 1 2 m v^2= 1 2 m v₁^2+ 1 2 m v₂^2+ 3 4 13.6 & v_ = 3 13.6 m & K E_ = 1 2 m v_ ^2= 3 2 13.6=20.4 eV aligned