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

For a particular electron in an atom, the quantum number that determines the size of its orbital has a value of 4 , and the quantum number that determines the shape of its orbital has a value of 1 . What are the number of radial nodes and the orbital angular momentum of this electron, respectively?

Options

  1. A3 and 2 h 2
  2. B2 and 6 h 2
  3. C2 and 2 h 2
  4. D4 and 0

Correct answer

C. 2 and 2 h 2

Step-by-step solution

The quantum number determining the size of an orbital is the principal quantum number ( n ). Therefore, n = 4 . The quantum number determining the shape of an orbital is the azimuthal quantum number ( l ). Therefore, l = 1 . The number of radial nodes is calculated using the formula n - l - 1 . Radial nodes = 4 - 1 - 1 = 2 . The orbital angular momentum is calculated using the formula l(l+1) h 2 . Orbital angular momentum = 1(1+1) h 2 = 2 h 2 . Answer: 2 and 2 h 2

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 NEET PYQs