N Awasthi Physical Chemistry
The energy of a I,II and III energy levels of a certain atom are E, 3/4E and 2E respectively. A photon of wavelength λ is emitted during a transition from III to I. What will be the wavelength of emission for transition II to I?
10
Nov
The energy of a I,II and III energy levels of a certain atom are E, 3/4E and 2E respectively. A photon of wavelength λ is emitted during a transition from III to I. What will be the wavelength of emission for transition II to I? 3/4E and 2E respectively. A photon of wavelength λ is [...]
Monochromatic radiation of specific wavelength is incident on H-atoms in the ground state. H-atoms absorb energy and emit subsequently radiations of six different wavelengths. Find the wavelength of incident radiations:
10
Nov
Monochromatic radiation of specific wavelength is incident on H-atoms in the ground state. H-atoms absorb energy and emit subsequently radiations of six different wavelengths. Find the wavelength of incident radiations: For a 3s−orbital value of v is given by following relation: ψ(3s)= 9 root3/1 ( a0/1)^3/2 (6−6σ+σ^2 )e −σ/2 ;whereσ = 3a0/2r.Z What is [...]
For a 3s−orbital value of v is given by following relation: ψ(3s)= 9 root3/1 ( a0/1)^3/2 (6−6σ+σ^2 )e −σ/2 ;whereσ = 3a0/2r.Z What is the maximum radial distance of the node from the nucleus?
10
Nov
For a 3s−orbital value of v is given by following relation: ψ(3s)= 9 root3/1 ( a0/1)^3/2 (6−6σ+σ^2 )e −σ/2 ;whereσ = 3a0/2r.Z What is the maximum radial distance of the node from the nucleus? For a 3s−orbital value of v is given by following relation: ψ(3s)= 9 root3/1 ( a0/1)^3/2 (6−6σ+σ^2 )e −σ/2 ;whereσ [...]
At which temperature will the translational kinetic energy of H-atom equal to that for H-atom of first line Lyman transition? (Given NA =6×10^23 )
10
Nov
At which temperature will the translational kinetic energy of H-atom equal to that for H-atom of first line Lyman transition? (Given NA =6×10^23 ) At which temperature will the translational kinetic energy of H-atom equal to that for H-atom of first line Lyman transition? (Given NA =6×10^23 ) November 10, 2020 Category: Chapter 2 - [...]
If the energy of H-atom in the ground state is −E, the velocity of photo-electron emitted when a photon having energy Ep strikes a stationary Li^2+ ion in ground state, is given by:
10
Nov
If the energy of H-atom in the ground state is −E, the velocity of photo-electron emitted when a photon having energy Ep strikes a stationary Li^2+ ion in ground state, is given by: If the energy of H-atom in the ground state is −E is given by the velocity of photo-electron emitted when a photon [...]
An element undergoes a reaction as shown: X+2e− →X 2− , energy released =30.87 eV/atom. If the energy released, is used to dissociate 4 g of H 2 molecules, equally into H+ and H^* , where H^∗ is excited state of H atoms where the electron travels in orbit whose circumference equal to four times its de Broglie’s wavelength. Determine the least moles of X that would be required. Given: I.E. of H=13.6 eV/atom, bond energy of H2 = 4.526 eV/ molecule.
10
Nov
An element undergoes a reaction as shown: X+2e− →X 2− , energy released =30.87 eV/atom. If the energy released, is used to dissociate 4 g of H 2 molecules, equally into H+ and H^* , where H^∗ is excited state of H atoms where the electron travels in orbit whose circumference equal to four times [...]
An electron is allowed to move freely in a closed cubic box of length of side 10 cm. The uncertainty in its velocity will be :
10
Nov
An electron is allowed to move freely in a closed cubic box of length of side 10 cm. The uncertainty in its velocity will be : An electron is allowed to move freely in a closed cubic box of length of side 10 cm. The uncertainty in its velocity will be : November 10, 2020 [...]
In a collection of H-atoms, all the electrons jump from n=5 to ground level finally ( directly of indirectly) ,without emitting any line in Blamer series. The number of possible different radiations is :
10
Nov
In a collection of H-atoms, all the electrons jump from n=5 to ground level finally ( directly of indirectly) ,without emitting any line in Blamer series. The number of possible different radiations is : all the electrons jump from n=5 to ground level finally ( directly of indirectly) In a collection of H-atoms without emitting [...]
When an electron makes a transition from (n+1) state to n th state, the frequency of emitted radiations is related to n according to (n>>1):
10
Nov
When an electron makes a transition from (n+1) state to n th state, the frequency of emitted radiations is related to n according to (n>>1): the frequency of emitted radiations is related to n according to (n>>1): When an electron makes a transition from (n+1) state to n th state November 10, 2020 Category: Chapter [...]
If radiation corresponding to second line of “Balmer series” of Li^2+ ion, knocked out electron from first excited state of H-atom, then kinetic energy of ejected electron would be:
10
Nov
If radiation corresponding to second line of “Balmer series” of Li^2+ ion, knocked out electron from first excited state of H-atom, then kinetic energy of ejected electron would be: If radiation corresponding to second line of "Balmer series" of Li^2+ ion knocked out electron from first excited state of H-atom then kinetic energy of ejected [...]