Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS2017ChemistryStructure of Atom

Ionisation potential of hydrogen atom is 13.6 eV . Hydrogen atom in ground state is excited by monochromatic light of energy 12.1 eV . The spectral lines emitted by hydrogen according to Bohr's theory will be

Options

  1. Aone
  2. Btwo
  3. Cthree
  4. Dfour

Correct answer

C. three

Step-by-step solution

Since ionisation potential of hydrogen atom is 13.6 eV . E₁=-13.6 eV Now, E_n-E₁= -13.6 n^2 -(-13.6)=12.1 aligned & -13.6 n^2 +13.6=12.1 & n=3 aligned After absorbing 12.1 eV , the electron of H -atom is excited to 3^ rd shell. Thus, possible transitions are 3 i.e., 3 2 , 2 1 and 3 1

Practice Structure of Atom on Quantrex Academy →

More from Structure of Atom

Identify the pair of atoms of elements as isotones from the following. 2026Which of the following elements has an electronic configuration, [ Ar ] 4s^2 ? 2026Calculate the energy per mole of photons of red light with a wavelength 750 nm. [ h = 6.626 10⁻³⁴ Js, C = 3 10^8 m/s.] 2026Calculate the energy associated with an electron in the first orbit of hydrogen atom? 2026Find the wave number of the 4^ th line in the Lyman series of H spectrum. (R = Rydberg constant) 2026Calculate the de-Broglie wavelength of an electron having velocity 1000 ms ⁻¹ [ h = 6.626 10⁻³⁴ js , mass of an electron = 9.1 10⁻³¹ kg ] 2026How many total number of s and p electrons are respectively present in Cl ^- ? 2026Visible light has a wavelength of 700 nm. Calculate its frequency in hertz. 2026 Full Structure of Atom list All AIIMS PYQs