Assertion: X-rays cannot be obtained in the emission spectrum of hydrogen atom.
Reason: Maximum energy of photons emitted form hydroen spectrum is 13.6 eV.

Charateristic X-rays are not obtained in the spectrum of H-atom bacause-

Energy of the lowest level of hydrogen atom is -13.6 eV . The energy of the photon emitted in the transition from n=3 to n=1 is

The energy of the ground state of hydrogen atom is -13.6 eV. The energy of the photon emitted in the transiton from n=4 to n=2 is

Hydrogen atoms in ground state are bombarded by electrons accelerated through a potential difference of V volts. For what range of values of V, will we get only one spectral line in the spectrum of hydrogen atoms excited by impacts of electrons? Take ground state energy of hydrogen atom to be – 13.6 eV .

Assertion: Hydrogen atom consists of anly one electron but its emission spectrum has may lines. Reason: Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found.

Excitions energy of hydrogen atom is 13.6 eV mathc the following

Assertion: It is not essential that all the lines available in the emission spectrum will also be available in the absorption spectrum. Reason: The spectrum of hydrogen atom is only absorption spectrum.

Hydrogen like atoms (atomic number = Z ) in a sample are in excited state with principal quantum number n. The emission spectrum of the sample has 15 different lines. The second most energetic photon emitted by the sample has energy of 27.2 eV . Find Z.