Question

Imagine an atom made up of photon and a hypothetical particle of double the mass of electron, but having the same charge as that of electron. Apply the Bohr atom model and consider all possible transitions of this hypothetical particle to the first excited level. The longest wavelength photon that will be emitted has wavelength  , (given in terms of Rydberg constant R for hydrogen atom) equal to

Answer 1

Explanation:

λ is inversely proportional to mass

Hint

For lyman Max  λ = 4/3R

   Balmer λ = 36/5R

See the denominator it goes in proportion with 2

So for this hypothetical atom λ = 18 / 5R ( divided by 2 which is the mass of 2 electron)