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According to Bohr’s theory, which of the...

According to Bohr’s theory, which of the following correctly represents the variation of energy and radius of an electron in nth orbit of H-atom?

A

`E_(n)prop(1)/(n^(2)),r prop (1)/(n^(2))`

B

`E_(n)prop(1)/(n^(2)),r prop n^(2)`

C

`E_(n)prop n^(2), r prop n^(2)`

D

`E_(n)prop n, r prop (1)/(n)`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • According to Bohr's atomic theory, which of the following is correct ?

    A
    Potential energy of electron `prop(Z^(2))/(n^(2))`
    B
    The product of velocity of electron and principle quantum number `(n) prop Z^(2)`
    C
    Frequency of revolution of electron in an orbit `prop (Z^(2))/(n^(3))`
    D
    Coulombic force of attraction on the electron `prop (Z^(2))/(n^(2))`

  • The energy of an electron in the nth Bohr orbit of hydrogen atom is

    A
    `-(13.6)/(n^(4))`eV
    B
    `-(13.6)/(n^(3))`eV
    C
    `-(13.6)/(n^(2)) ` eV
    D
    `-(13.6)/(n) ` eV

  • The energy of an electron in second Bohr orbit of hydrogen atom is :

    A
    `- 5. 44 xx 10^(-19) eV`
    B
    `- 5.44 xx 10 ^(-19) cal `
    C
    `-5.44 xx 1 ^(-19) KJ`
    D
    ` - 5.44 xx 10 ^(-19) J`

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