First slide

Bohr Model of the Hydrogen atom.

Question

Energy required to completely separate the electron and proton in a hydrogen atom is ground state in Joule is

Easy

A

$12.42 \times 10^{- 20} J$
B

$8.96 \times 10^{- 18} J$
C

$2.4 \times 10^{- 19} J$
D

$21.76 \times 10^{- 19} J$

Solution

Energy of electron in the ground state of hydrogen atom = -13.6 eV
$∴$ So energy to be supplied to the atom to completely separate the electron from the proton $= 13.6 e V = 13.6 \times 1.6 \times 10^{- 19} J = 21.76 \times {10^{-}}^{19} J$

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