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NEETChemistryStructure of Atom

An electron is present in a 4d subshell. Which of the following represents the correct set of possible values for its principal ( n ), azimuthal ( l ), and magnetic ( m_l ) quantum numbers?

Options

  1. An = 4 , l = 3 , m_l = -3, -2, -1, 0, +1, +2, +3
  2. Bn = 4 , l = 1 , m_l = -1, 0, +1
  3. Cn = 4 , l = 2 , m_l = -2, -1, 0, +1, +2
  4. Dn = 4 , l = 2 , m_l = -3, -2, -1, 0, +1, +2, +3

Correct answer

C. n = 4 , l = 2 , m_l = -2, -1, 0, +1, +2

Step-by-step solution

For a 4d subshell, the principal quantum number n is given by the numerical prefix, so n = 4 . The letter ' d ' corresponds to the azimuthal quantum number l = 2 . The magnetic quantum number m_l can take integer values from -l to +l . For l = 2 , the possible values of m_l are -2, -1, 0, +1, +2 . Therefore, the correct set is n = 4 , l = 2 , m_l = -2, -1, 0, +1, +2 . Answer: n = 4 , l = 2 , m_l = -2, -1, 0, +1, +2

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