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Find the value of wave number (v ˉ) in terms of Rydberg’s constant, when transition of electron takes place between two levels of He + ion whose sum is 4 and difference is 2. Find the value of wave number (v ˉ) in terms of Rydberg's constant when transition of electron takes place between two [...]

With increasing quantum number, the energy difference between adjacent energy levels in H – atoms: the energy difference between adjacent energy levels in H - atoms: With increasing quantum number November 10, 2020 Category: Chapter 2 - Atomic Structure (Level 1 and Level 2) , N Awasthi Physical Chemistry ,

Multiple or fine structure of spectral lines is due to : Multiple or fine structure of spectral lines is due to : November 10, 2020 Category: Chapter 2 - Atomic Structure (Level 1 and Level 2) , N Awasthi Physical Chemistry ,

Which of the following expressions represents the spectrum of Balmer series (If n is the principal quantum number of higher energy level) in Hydrogen atom ? Which of the following expressions represents the spectrum of Balmer series (If n is the principal quantum number of higher energy level) in Hydrogen atom ? November 10, 2020 [...]

Electron transition in He^+ ion takes from n2 to n1 ​shell such that: 2n 2 ​ +3n 1 ​ =18 2n 2 ​ −3n 1 ​ =6 What will be the total number of photons emitted when electrons transit to n1 shell? Electron transition in He^+ ion takes from n2 to n1 ​shell such that: [...]

Assume that 2×10^−17 J of light energy is needed by the interior of the human eye to see an object. How many photons of yellow light with λ=595.2nm are needed to generate this generate this minimum energy ? What is ratio of time periods (T1 /T 2 ) in second orbit of hydrogen atom to [...]

Wavelength for high energy EMR transition in H-atom is 91 nm. What energy is needed for this transition? Wavelength for high energy EMR transition in H-atom is 91 nm. What energy is needed for this transition? November 10, 2020 Category: Chapter 2 - Atomic Structure (Level 1 and Level 2) , N Awasthi Physical Chemistry [...]

What is the energy content per photon (J) for light of frequency 4.2×10^14 Hz? What is the energy content per photon (J) for light of frequency 4.2×10^14 Hz? November 10, 2020 Category: Chapter 2 - Atomic Structure (Level 1 and Level 2) , N Awasthi Physical Chemistry ,

The ionization potential for the electron in the ground state of hydrogen atom is 13.6 eV atom^-1.What would be the ionization potential for the electron in the first excited state of Li2+ ? The ionization potential for the electron in the ground state of hydrogen atom is 13.6 eV atom^-1.What would be the ionization potential [...]

If ε0 be the permittivity of vacuum and r be the radius of orbit of H- atom in which electron is revolving, then velocity of electron is given by : If ε0 be the permittivity of vacuum and r be the radius of orbit of H- atom in which electron is revolving then velocity of [...]