imagine n atom made up of a proton & hypothetical particle of double the mass of de electron but having de same charge the elctron apply de bhor atom model & consider all possible transition of dis hypotjetical particle to de first excited level de longest wavelenght photon tat will b emitted has wavelenght given [rydberg constant =r ] is equal to

1. 9/5r

2. 36/5r

3.18/5r

4.4/r

Jitender Pal , 11 Years ago

Grade 9