Question

Which quantum number signifies the sub-shells in an atom?

• A. Principal quantum number
• B. Azimuthal quantum number
• C. Magnetic quantum number
• D. Spin quantum number

Answer 1

Answer: (B)

Azimuthal quantum number

• One or more orbitals in the electron shell of an atom with the same energy level. Subshells have different shapes and are distinguished by their magnetic quantum number.
  
• The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital.
  
• Hence,option B is correct answer.