JEE Main · 2024 · 06 Apr 2024 · Shift 2 · Atomic Structure

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For hydrogen atom, energy of an electron in first excited state is -3.4 eV, K.E. of the same electron of hydrogen atom is x eV. Value of x is ______ . (Nearest integer)

Answer: 34

Solution

For hydrogen (Bohr model), total energy equals times the kinetic energy, (virial theorem for a Coulomb potential). At the first excited state, eV, so .

JEE Main · 2024 · 06 Apr 2024 · Shift 2 · Integer answer

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