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The ionisation energy of hydrogen is...

The ionisation energy of hydrogen is

A

1312 KJ `"mole"^(-1)`

B

520 KJ `"mole"^(-1)`

C

495 KJ `"mole"^(-1)`

D

1681 KJ `"mole"^(-1)`

Text Solution

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The correct Answer is:
A
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The ionisation energy of hydrogen atom is 13.6 eV. What will be the ionisation energy of He^(+) and Li^(2+) ions?

Prove that the ionisation energy of hydrogen atom is 13.6 eV.

Knowledge Check

  • The ionization energy of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by monochromatic light of energy 12.1 eV. The spectral lines emitted by hydrogen atoms according to Bohr.s theory will be

    A
    N=3 to n=1
    B
    N=3 to n=2
    C
    N=2 to n=1
    D
    N=4 to n=1

  • Assertion (A): Hydrogen reacts faster with halogens than deuterium. Reason (R) : The activation energy of hydrogen is less than that of deuterium.

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true and R is not the correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

  • The ionisation potential of Hydrogen is 2.17 xx 10^(-11) erg/atom. The energy of the electron in the second orbit of the hydrogen atom is

    A
    `-(2.17 xx 10^(-11))/(2)`
    B
    `-(2.17 xx 10^(-11))/(2^(2))`
    C
    `-(2.17 xx 10^(17))/(2^(2))`
    D
    `-(2.17 xx 10^(11))/(2^(2))`

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    The ionisation energy of He^(+) is 19.6 xx 10^(-18)"J atom"^(-1) . Calculate the energy of first stationary state of Li^(2+) .

    The ionisation energy of He^(+) is 19.6xx10^(-18)"J atom"^(-1) Calculate the energy of first stationary state of Li^(2+) ion.

    The ground state energy of hydrogen atom is - 13.6eV. The kinetic energy of the electron in this state is:

    The Ionisation potential of Hydrogen is 2.17 xx10^(-1) erg/atom. The energy of the electron in the second orbit of the hydrogen atom is

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