Question

The Wave Number of the First Line Of Balmer Series Of Hydrogen Is 15200 Per Cm. The Wave Number Of The First Balmer Line Of (Be+3) ?

Answer 1

For same transition
Wavenumber of a hydrogen like species = Z² * Wavenumber of hydrogen atom
= 4² * 15200 / cm
= 243200 / cm

[Note: Z refers to atomic number of hydrogen like species]

Answer 2

Answer:

243200

Explanation:

atomic number of Be = 4

15200*4^2=243200