Chapter 2 – Atomic Structure (Level 1 and Level 2)
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Calculate the value of A. A = E1,2/2E2,1 where En,z = energy of electron in nth orbit, z = atomic number of hydrogen like species.
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Nov
Calculate the value of A. A = E1,2/2E2,1 where En,z = energy of electron in nth orbit, z = atomic number of hydrogen like species. 1 where En 2/2E2 Calculate the value of A. A = E1 z = atomic number of hydrogen like species. z = energy of electron in nth orbit November 10, [...]
In a sample of excited hydrogen atoms electrons make transition from n=2 to n=1 emitted quanta strike on a metal of work function (phi) 4.2eV. Calculate the wavelength (in A0) associated with ejected electrons having maximum kinetic energy.
10
Nov
In a sample of excited hydrogen atoms electrons make transition from n=2 to n=1 emitted quanta strike on a metal of work function (phi) 4.2eV. Calculate the wavelength (in A0) associated with ejected electrons having maximum kinetic energy. Find out the difference in number of angular nodes and number of radial nodes in the orbital [...]
An α particle moving with velocity 1/30 th times of velocity of light. If uncertainty in position is 3.31/π pm, then minimum uncertainty in kinetic energy is y×10^−16 J. Calculate the value of y.
10
Nov
An α particle moving with velocity 1/30 th times of velocity of light. If uncertainty in position is 3.31/π pm, then minimum uncertainty in kinetic energy is y×10^−16 J. Calculate the value of y. An α particle moving with velocity 1/30 th times of velocity of light. If uncertainty in position is 3.31/π pm then [...]
Find the separation between two electron (in Å) in vacuum, if electrostatic potential energy between these electrons in 7.67×10^−19)J. [Given: e= 1.6×10^−19C ∈o=8.85×10^−12 J^(-1)C^(2)m^(-1)π=3.14]
10
Nov
Find the separation between two electron (in Å) in vacuum, if electrostatic potential energy between these electrons in 7.67×10^−19)J. [Given: e= 1.6×10^−19C ∈o=8.85×10^−12 J^(-1)C^(2)m^(-1)π=3.14] Find the separation between two electron (in Å) in vacuum if electrostatic potential energy between these electrons in 7.67×10^−19)J. [Given: e= 1.6×10^−19C ∈o=8.85×10^−12 J^(-1)C^(2)m^(-1)π=3.14] November 10, 2020 Category: Chapter 2 - [...]
For 3s orbital of hydrogen atom, the normalised wave function is Ψ3s=1(81) root3π−√(1/ao)^3/2[27 − 18r/ao + 2r^2/a^2o]e^−r/3ao If distance between the radial nodes is d, calculate the value of d/1.73ao
10
Nov
For 3s orbital of hydrogen atom, the normalised wave function is Ψ3s=1(81) root3π−√(1/ao)^3/2[27 − 18r/ao + 2r^2/a^2o]e^−r/3ao If distance between the radial nodes is d, calculate the value of d/1.73ao calculate the value of d/1.73ao For 3s orbital of hydrogen atom the normalised wave function is Ψ3s=1(81) root3π−√(1/ao)^3/2[27 − 18r/ao + 2r^2/a^2o]e^−r/3ao If distance between [...]
When an electron makes transition from (n+1)state to n state the wavelength of emitted radiations is related to n (n>>>1) according to λ∝nx. What is the value of x ?
10
Nov
When an electron makes transition from (n+1)state to n state the wavelength of emitted radiations is related to n (n>>>1) according to λ∝nx. What is the value of x ? When an electron makes transition from (n+1)state to n state the wavelength of emitted radiations is related to n (n>>>1) according to λ∝nx. What is [...]
Infrared lamps are used in restaurants to keep the food warm. The infrared radiation is strongly absorbed by water, raising its temperature and that of the food. If the wavelength of infrared radiation is assumed to be 1500nm, then the number of photons per second of infrared radiation produced by an infrared lamp, that consumes energy at the rate of 100W and is 12% efficient only, is (x × 10^19 ). The value of x is: [Given: h=6.625×10^−34 J−s]
10
Nov
Infrared lamps are used in restaurants to keep the food warm. The infrared radiation is strongly absorbed by water, raising its temperature and that of the food. If the wavelength of infrared radiation is assumed to be 1500nm, then the number of photons per second of infrared radiation produced by an infrared lamp, that consumes [...]
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Infrared lamps are used in restaurants to keep the food warm. The infrared radiation is strongly absorbed by water ,
is (x × 10^19 ). The value of x is: [Given: h=6.625×10^−34 J−s] ,
raising its temperature and that of the food. If the wavelength of infrared radiation is assumed to be 1500nm ,
that consumes energy at the rate of 100W and is 12% efficient only ,
then the number of photons per second of infrared radiation produced by an infrared lamp ,
What is the total number of radial and angular nodes present in 5f orbital ?
10
Nov
What is the total number of radial and angular nodes present in 5f orbital ? What is the total number of radial and angular nodes present in 5f orbital ? November 10, 2020 Category: Chapter 2 - Atomic Structure (Level 1 and Level 2) , N Awasthi Physical Chemistry ,
Find out the difference in number of angular nodes and number of radial nodes in the orbital to which last electron of chromium present.
10
Nov
Find out the difference in number of angular nodes and number of radial nodes in the orbital to which last electron of chromium present. Find out the difference in number of angular nodes and number of radial nodes in the orbital to which last electron of chromium present. November 10, 2020 Category: Chapter 2 - [...]
A photon of energy 4.5 eV strikes on a metal surface of work function 3.0eV. If uncertainty in position is 254πÅ, find the uncertainty in measurement of de Broglie wavelength (in Å ).
10
Nov
A photon of energy 4.5 eV strikes on a metal surface of work function 3.0eV. If uncertainty in position is 254πÅ, find the uncertainty in measurement of de Broglie wavelength (in Å ). A photon of energy 4.5 eV strikes on a metal surface of work function 3.0eV. If uncertainty in position is 254πÅ find [...]