1
Question
The ground state energy
of hydrogen atom is −13.6 eV. What are the kinetic and
potential energies of the electron in this state?
The ground state energy of hydrogen atom is −13.6 eV. What are the kinetic and potential energies of the electron in this state?
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Solution
Ground state energy of
hydrogen atom, E = − 13.6 eV
This is the total
energy of a hydrogen atom. Kinetic energy is equal to the negative of
the total energy.
Kinetic energy = −
E = − (− 13.6) = 13.6 eV
Potential energy is
equal to the negative of two times of kinetic energy.
Potential energy =
− 2 × (13.6) = − 27 .2 eV
Ground state energy of hydrogen atom, E = − 13.6 eV
This is the total energy of a hydrogen atom. Kinetic energy is equal to the negative of the total energy.
Kinetic energy = − E = − (− 13.6) = 13.6 eV
Potential energy is equal to the negative of two times of kinetic energy.
Potential energy = − 2 × (13.6) = − 27 .2 eV
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