Bohr’s Atomic Model (HSC SSCE Physics): Flashcards

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Bohr's Atomic Model
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Year Bohr developed his atomic model

1913

Problem Rutherford's model had that Bohr solved

Electrons should spiral into nucleus but atoms are stable

What quantisation means for electron energy in atoms

Electrons can only have certain allowed energy values

Do electrons in stable shells emit radiation? (Bohr)

No

Formula for energy of a photon

E=hfE = hf

Value of Planck's constant hh

6.63×10346.63 \times 10^{-34} J s

What principal quantum number nn determines

Energy shell electron occupies (e.g. n=1,2,3...n=1,2,3...)

Major limitation of Bohr model re: other atoms

Could not predict spectra of multi-electron atoms

What is the Zeeman effect?

Spectral lines split into multiple lines in magnetic field

Energy change formula for electron transition

E=EiEf=hfE = E_i - E_f = hf

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