ATOMIC SPECTRA AND THE BOHR MODEL OF THE HYDROGEN ATOM | 1.2

Bohr orbit (n)

defines both the energy level and the position of the electron

characteristics of Energies of electrons

– quantized

– will not radiate

Energy of electron formula S

E =

energy of an electron in a particular orbit (in J)

n =

energy level or the principal quantum no. (n = 1, 2,

3...)

Rh =

Rydberg constant = 2.179 x 10^-18 J

lower n to higher n

Absorption Process?

higher n to lower n

Emission Process

n² = -Rh/En

energy level formula

absorption unit?

Emission unit

Line spectrum of hydrogen

Each line in the emission spectrum corresponds to a

particular allowed transition in a hydrogen atom

(400 to 700 nm)

Balmer series

falls within the

visible region

_______

atomic H emission spectrum series (low to high n)

lyman, balmer, paschen, brackett