Bohr Model of Atom - QT

• According to Bohr's Theory for the Hydrogen Atom, certain colored lines are emitted with a specific frequency (v); certain energy changes take place for e-.
• Electrons are restricted to certain energy levels, that are, for example, quantized.
• Electrons move in fixed orbits
• The GROUND state is negative.
• The GROUND state, n = 1, is the lowest and most stable energy state of an atom.
• The EXCITED state, where n > 1, is positive and has higher energy than the GROUND state.
• In the EXCITED state of an atom, the e- stability is low.
• As e - absorbs energy, it moves to a higher orbit, going into the excited state.
• When e- falls back to a lower orbit, it is released as light.
• Formula for electron orbital movement: (b = 2.18 x 10^-18 J, Z = nuclear charge, n = quantum numbers)

  $E=$$-bZ^2/n^2$
• Formula for emission spectrum of hydrogen: $∆E =$$E_F - E_I$
• Formula for possibilities of energies in a hydrogen atom: (n = infinite, and can be final or initial)$E_n =$$-2.18 *$$10^-18 J (1/n^2)$