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

How many subshells are there in the third principal shell (n = 3)?

Options

  1. AOne
  2. BTwo
  3. CThree
  4. DFour

Correct answer

C. Three

Step-by-step solution

In the third principal shell (n = 3), there are three sub-shells corresponding to the values of l (azimuthal quantum number) 0, 1, and 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