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B) Bohr Model of Atom

Early 1900's - The Danish scientist Neils Bohr discovers the strange behavior of electrons.

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Electrons in atoms are restricted in the energies they can possess, give off and absorb.

Hypothetical Element X

Excited Electron		Energy of 12 eV
Excited Electron		Energy of 4 eV
Ground State		Energy of 1 eV

When this electron falls back to the ground state, what energies is it capable of giving off?

Answer

8 eV, 3 eV, 11 eV

Each energy transition
produces only one photon

1 eV = 1.6 x 10^-19 J  p. 1 Reference

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