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CBSE Class 12-science Answered

Q)(a)Using de Boglie's hypothesis, explain with the help of a  suitable diagram, Bohr's second postulate of quantisation of energy levels in a hydrogen atom. (b)The ground state energy of hydrogen atom is -13.6eV. What are the kinetic and potential energies of the electron in this state?
Asked by rohitraman1115 | 12 Jan, 2019, 10:48: AM
answered-by-expert Expert Answer
As per our policy only one question is going to  be answered in on url
 
As we know
 Total energy = kinetic energy + potential energy
In atomic structure potential energy is electrostatic and for stability it must be negative and it dominates the kinetic energy
From Bohr atomic model we know P.E = 2 K.E ( magnitude wise)
So putting the values
-13.6 = x - 2x ( x is kinetic energy)
So kinetic energy =13.6 ev
Potential energy = -2× 13.6 = - 27.2ev
Answered by Ankit K | 14 Jan, 2019, 10:53: PM

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