Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT2018ChemistryStructure of AtomActual

If 0 . 53 × 10 - 10 4 metre is the radius of smallest electron orbit in hydrogen like atom, then the atom is

Options

  1. Ahydrogen atom
  2. BHe +
  3. CLi 2 +
  4. DBe 3 +

Correct answer

D. Be 3 +

Step-by-step solution

For hydrogen like atom, the radius of n th orbit is given by, r n = n 2 Z r 0 Where, r 0 = 0 . 53 × 10 - 10   m and r n = 0 . 53 × 10 - 10   m 4 At ground state, n = 1 Hence, the atom is Be 3 + [ ∵ Z = 4 ] So, the atom is triply ionised beryllium Be 3 + .

Practice Structure of Atom on Quantrex Academy →

More from Structure of Atom

The degeneracy of hydrogen atom that has energy equal to -R_ H 9 is (where, R_ H = Rydberg constant) 2024If the de-broglie wavelength of a particle of mass (m) is 100 times its velocity. Then, its value in terms of its mass (m) and plank constant (h) is 2024The energy of second orbit of hydrogen atom is -5.45 10⁻¹⁹ ~J . What is the energy of first orbit of Li ²⁺ ion (in J ) ? 2024A photon of wavelength 3000 Ã… strikes a metal surface. The work function of the metal is 2.13 eV. What is the kinetic energy of the emitted photoelectron? ( h =6.626 10⁻³⁴ Js ) 2024A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V volt. If 'e' and m are charge and mass of an electron, respectiv 2024Observe the given boundary surface diagrams of two orbitals I and II and choose the correct option. 2023If the radius of the 3 rd Bohr's orbit of hydrogen atom is r₃ and the radius of 4^ th Bohr's orbit is r₄ . Then: 2023The Bohr orbit radius for the hydrogen atom (n=1) is approximately 0.530 Å . The radius for the first excited state (n=2) orbit is (in Å ) 2023 Full Structure of Atom list All BITSAT PYQs