The best evidence that electrons are arranged in definite orbits or energy levels is based on the observation that:
atomic spectra consist of discrete lines and not continuous bands
electrons in the beta ray have high kinetic energy
the penetrating power of cathode ray electrons depends upon the voltage used to produce them
electrons revolve around the nucleus
A
atomic spectra consist of discrete lines and not continuous bands
B
the penetrating power of cathode ray electrons depends upon the voltage used to produce them
C
electrons in the beta ray have high kinetic energy
D
electrons revolve around the nucleus
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Solution
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The best evidence that electrons are arranged in definite orbits or energy levels is based on the observation that the spectral lines of hydrogen atom consist of discrete lines and not continuous bands.
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