Home
Class 12
PHYSICS
The diagram shows the energy levels for ...

The diagram shows the energy levels for an electron in a certain atom. Which transition shown represent the emission of a photon with the most energy ?

A

I

B

II

C

III

D

IV

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaEprop((1)/(n_(i)^(2))-(1)/(n_k))^(2)`
(I) For transtions n=1 to n=4 energy is absorbed
(II) `DeltaE_(2)prop((1)/(3^(2))-(1)/(4^(2)))prop((1)/(9)-(1)/(16))prop(7)/(144)prop0.0486`
(III) `DeltaE_(3)prop((1)/(1^(2))-(1)/(4^(2)))prop((1)/(1)-(1)/(16))prop(15)/(16)prop0.9375`
(IV) `DeltaE_(4)prop((1)/(2^(2))-(1)/(4^(2)))prop((1)/(4)-(1)/(16))prop(12)/(64)prop0.1875`
`:.` In option III energy of emitted photon is maximum
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ATOMS

    KUMAR PRAKASHAN|Exercise Section-D (Multiple Choice Questions (MCQs)) (MCQs From .DARPAN Based On Textbook) (de-Broglie.s Explanation of Bohr.s Second Postulate of Quantisation)|10 Videos

  • ATOMS

    KUMAR PRAKASHAN|Exercise Section-D (Multiple Choice Questions (MCQs)) (MCQs From .DARPAN Based On Textbook) (MCQs based on Textual Illustrations and Exercise )|11 Videos

  • ATOMS

    KUMAR PRAKASHAN|Exercise Section-D (Multiple Choice Questions (MCQs)) (MCQs From .DARPAN Based On Textbook) (Bohr Model of Hydrogen Atom )|21 Videos

  • ALTERNATING CURRENTS

    KUMAR PRAKASHAN|Exercise SECTION-D MCQs (COMPETITIVE EXAMS)|64 Videos

  • BOARD'S QUESTION PAPER MARCH-2020

    KUMAR PRAKASHAN|Exercise PART-B SECTION -C|4 Videos

Similar Questions

Explore conceptually related problems

The diagram to the right shows the lowest four energy levels for an electron in a hypotentical atom. The electron is excited to the -1 eV level of the atom and transitions to the lowest energy state emitting only two phtosn. Which of the following energies could not belong to either of the phtons?

What is the total energy of electron at infinite distance in an atom ?

Knowledge Check

  • Below are shown the energy levels for a particular atom. A photon with wavelength is emitted when the system transist from the fourth energy level (4E) to the first energy level (E). When the system transist from the (7)/(3)E energy level to E energy level photons emitted with wavelength lamda_(2) , then (lamda_(1))/(lamda_(2))=.......

    A
    `(9)/(4)`
    B
    `(4)/(9)`
    C
    `(3)/(2)`
    D
    `(7)/(3)`

  • Highest energy level of an electron corresponds to n= infty and it has an energy of…….eV.

    A
    zero
    B
    `infty`
    C
    13.6
    D
    -13.6

  • If electron is removed from an atom then is energy

    A
    decreases
    B
    increases
    C
    remain same
    D
    none

    • Similar Questions

    Explore conceptually related problems

    The follwing diagram indicates the energy levels of a certain atom when the system moves from 2E level to E , a photon of wavelength lambda is emitted. The wavelength of photon produced during its transition from (4E)/(3) level to E is

    In Balmer series of H atom spectrum, which electronic transitions represents 3^(rd) line?

    If the energy of an electron in the second Bohr orbit of H-atom is -E, what is the energy of the electron in the Bohr’s first orbit?

    The figure shows an energy level diagram for the hydrogen atom. Several transitions are marked as I, II, III ",______," the diagram is only indicative and not to scale. . Which transition involves the longest wavelength line in the visible portion of the hydrogen spectrum

    Which of the following transitions in hydrogen atoms emit photons of highest frequency?

    Home
    Profile