a
electrons from the atoms
b
energy by proton transition
c
energy by electron transition
d
neutron from the atom
Explanation
Correct Option
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Dave333
4 years ago
Lines in the spectrum were due to transitions in which an electron moved from a higher-energy orbit with a larger radius to a lower-energy orbit with smaller radius. The orbit closest to the nucleus represented the ground state of the atom and was most stable; orbits farther away were higher-energy excited states.
