MCAT Question of the Day
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    Q:

    		 The emission spectrum of hydrogen in the visible region includes lines at 410 nm, 434 nm, 486 nm, and 656 nm. Given that hydrogen only has a single electron, which of the following best explains its ability to have multiple emission lines?
    		 

    A

    		 Each emission line corresponds to the electron dropping from different energy levels after excitation.

    B

    		 Hydrogen electrons are delocalized during excitation and each atom can temporarily acquire multiple electrons for excitation.

    C

    		 The single electron emits all of the lines simultaneously as it drops its energy level.

    D

    		 The energy of the lines must be combined to yield the true energy of the electron.



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