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The Total Energy of an Electron in the First Excited State of the Hydrogen Atom is About −3.4 Ev. What is the Kinetic Energy of the Electron in this State? - Physics

The total energy of an electron in the first excited state of the hydrogen atom is about −3.4 eV.

What is the kinetic energy of the electron in this state?

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Solution

Total energy of the electron, E = −3.4 eV

Kinetic energy of the electron is equal to the negative of the total energy.

⇒ K = −E

= − (− 3.4) = +3.4 eV

Hence, the kinetic energy of the electron in the given state is +3.4 eV.

Concept: Energy Levels
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APPEARS IN

NCERT Class 12 Physics Textbook
Chapter 12 Atoms
Q 15.1 | Page 437
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