Using the bohr model, find the wavelength in nanometers of the radiation emitted by a hydrogen atom, when it makes a transition from the n = 9 state to the n = 1 state.

Given:

n = 9

n' = 1

Solution:

In Bohr's Model, the radiation emitted by a hydrogen atom on transition from the energy level, n = 9 to n' = 1 is given by:

              (1)

Also,

where

h= Planck's constant

c = speed of light

= wavelength of radiation emitted by hydrogen atom

Therefore, eqn (1) becomes:

(since, 1 eV = )

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.