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Sandra Saju
Subject: Physics
, asked on 3/2/18
Using Bohr's second postulate of quantisation of orbital angular momentum show that the circumference of the electron in the nth orbital state in hydrogen atom is n times the de Broglie wavelength associated with it.
Answer
1
Sandra Saju
Subject: Physics
, asked on 3/2/18
Using Bohr's postulates for hydrogen atom, show that the total energy (E) of the electron in the stationary states can be expressed as the sum of kinetic energy (K) and potential energy (U) , where K= -2U. Hence deduce the expression for the total energy in the nth energy level of hydrogen atom.( No links please) ( This question was asked by me before but the provided by experts was not satisfactory and wouldn't understand )
Answer
1
Sandra Saju
Subject: Physics
, asked on 3/2/18
The ground state energy of hydrogen atom is -13.6eV. If an electron makes a transition from an energy level -1.51eV to -3.4eV, calculate the wavelength of the spectral line emitted and name the series of hydrogen spectrum to which it belongs.
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Using Rydberg formula, calculate the longest wavelength belonging to lyman and Balmer series. In which region of hydrogen spectrum do these transitions lie ?
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Please help with this question no links please
8 (i) State Bohr's quantization condition for defining stationary orbits. How does the de Broglie hypothesis explain the stationary orbits?
(ii) Find the relation between three wavelengths
λ
1
,
λ
2
a
n
d
λ
3
from the energy-level diagram shown below.
Delhi 2016
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. Up to which energy level the hydrogen atoms would be excited? Calculate the wavelengths of the first member of Lyman and first member of Balmer series .
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Using Bohr's postulates, obtain the expression for the total energy of the electron in the stationary states of the hydrogen atom . Hence draw the energy level diagram showing how the line spectra corresponding to Balmar series occur due to transition between energy levels.
Answer
3
Sandra Saju
Subject: Physics
, asked on 2/2/18
Please help with this question . No links please
Q. (a) Using Bohr's second postulate of quantization of' orbital angular momentum show that the circumference of the electron in the
n
t
h
orbital state in hydrogen atom is n times the de Broglie wavelength associated with it.
(b) The electron in hydrogen atom is initially in the third excited state. What is the maximum number of spectral lines which be emitted when it finally moves to the ground state?
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Find out the wavelength of the electron orbiting in the ground state of hydrogen atom.
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Define the distance of closest approach.
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
How does one explain, using de Broglie hypothesis Bohr's second postulate of quantization of orbital angular momentum ?
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Show that the radius of the orbit in hydrogen atom varies as n2 , where n is the principal quantum number of atom.
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Please help with question and no links
Q). Consider two different hydrogen atoms. The electron in each atom is in an excited state.
(a) Is it possible for the electrons to have different energies but same orbital angular momentum according to the Bohr model? Justify your answer.
(b) If a proton had a radius R and the charge was uniformly distributed, calculate using Bohr theory, the ground state energy of a H - atom when R = 10
A
o
.
Answer
1
Sandra Saju
Subject: Physics
, asked on 2/2/18
Explain in brief why Rutherford's model cannot account for the stability of an atom.
Answer
1
Sofiya Parihar
Subject: Physics
, asked on 2/2/18
Answer question.no.42
Q.42. A using the postulates of Bohr's model of H-atom, obtain an expression for the frequency of radiation emitted when the atom makes a transition from the higher energy state with quantum number
n
i
to the lower energy state with quantum number.
n
f
n
f
<
n
i
.
Answer
2
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What are you looking for?
8 (i) State Bohr's quantization condition for defining stationary orbits. How does the de Broglie hypothesis explain the stationary orbits?
(ii) Find the relation between three wavelengths from the energy-level diagram shown below. Delhi 2016
Q. (a) Using Bohr's second postulate of quantization of' orbital angular momentum show that the circumference of the electron in the orbital state in hydrogen atom is n times the de Broglie wavelength associated with it.
(b) The electron in hydrogen atom is initially in the third excited state. What is the maximum number of spectral lines which be emitted when it finally moves to the ground state?
Q). Consider two different hydrogen atoms. The electron in each atom is in an excited state.
(a) Is it possible for the electrons to have different energies but same orbital angular momentum according to the Bohr model? Justify your answer.
(b) If a proton had a radius R and the charge was uniformly distributed, calculate using Bohr theory, the ground state energy of a H - atom when R = 10 .
Q.42. A using the postulates of Bohr's model of H-atom, obtain an expression for the frequency of radiation emitted when the atom makes a transition from the higher energy state with quantum number to the lower energy state with quantum number. .