A) an atom has energy states having a continuous distribution
B) nothing can be send a bond energy states of atom
C) at atom has energy states, having discreet values
D) atom is an indivisible particle
Correct Answer: C
Solution :
The series of experiments by Frank and Hertz in 1914 produced direct evidence for energy, levels in atoms. In studying the motion of electron through mercury vapour under the action of an electric field they observed that the spectrum line at \[254\,\,nm\] was emitted by the vapour when the electro kinetic energy was greater than\[4.9\,\,eV\]. But was no spectrum line when kinetic energy was found less than\[4.9\,\,eV\].
You need to login to perform this action.
You will be redirected in
3 sec
