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       #Post#: 2467--------------------------------------------------
       Daily question-138
   DIR By: Shiva
       Date: April 12, 2013, 1:24 pm
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       Why there are so many lines in hydrogen spectrum even though
       hydrogen atom contains only one electron?
       #Post#: 2478--------------------------------------------------
       Re: Daily question-138
   DIR By: Chemist@
       Date: April 13, 2013, 5:57 am
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       Because, if enough energy is put in, the electron can become
       excited to any electron shell (2-7). Then it can fall down
       directly, from the excited to stationary state, or it can fall
       from one electron shell to a lower electron shell that is still
       above the the stationary level. There are many possible
       combinations, thus the many lines in hydrogen's spectrum.
       #Post#: 2479--------------------------------------------------
       Re: Daily question-138
   DIR By: Shiva
       Date: April 13, 2013, 7:02 am
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       Yes, also because any sample of hydrogen contains almost
       infinite number of atoms and hence electrons.
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