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NEST2020PhysicsAtomic Physics

An element of atomic number Z is in the ionized hydrogenic ground state. The largest wavelength that can convert it to a fully ionized state is 3.65 nm . Select the correct statement(s). (1 ~nm =10⁻⁵ . m and take the ionization energy of the hydrogen atom to be 13.60 eV.)

Options

  1. AIts potential energy is 680 eV .
  2. BZ=5
  3. CIts kinetic energy is 340 eV .
  4. DIts Bohr radius is 0.1 nm .

Correct answer

C. Its kinetic energy is 340 eV .

Step-by-step solution

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