Assign n, l, m_l, and m_s values to all seven nitrogen electrons.

• A. n = 1, l = 0, m_l = 0, m_s = +1/2
  n = 1, l = 0, m_l = 1, m_s = −1/2
  n = 2, l = 0, m_l = 0, m_s = +1/2
  n = 2, l = 0, m_l = 0, m_s = −1/2
  n = 2, l = 1, m_l = −1, m_s = +1/2
  n = 2, l = 1, m_l = 0, m_s = +1/2
  n = 2, l = 1, m_l = +1, m_s = +1/2
• B. n = 1, l = 0, m_l = 1, m_s = +1/2
  n = 1, l = 0, m_l = 0, m_s = −1/2
  n = 2, l = 0, m_l = 0, m_s = +1/2
  n = 2, l = 0, m_l = 0, m_s = −1/2
  n = 2, l = 1, m_l = −1, m_s = +1/2
  n = 2, l = 1, m_l = 0, m_s = +1/2
  n = 2, l = 1, m_l = +1, m_s = +1/2
• C. n = 1, l = 0, m_l = 0, m_s = +1/2
  n = 1, l = 0, m_l = 0, m_s = −1/2
  n = 2, l = 0, m_l = 0, m_s = +1/2
  n = 2, l = 0, m_l = 0, m_s = −1/2
  n = 2, l = 1, m_l = −1, m_s = +1/2
  n = 2, l = 1, m_l = 0, m_s = +1/2
  n = 2, l = 1, m_l = +1, m_s = +1/2
• D. n = 1, l = 0, m_l = −1, m_s = +1/2
  n = 1, l = 0, m_l = 0, m_s = −1/2
  n = 2, l = 0, m_l = 0, m_s = +1/2
  n = 2, l = 0, m_l = 0, m_s = −1/2
  n = 2, l = 1, m_l = −1, m_s = +1/2
  n = 2, l = 1, m_l = 0, m_s = +1/2
  n = 2, l = 1, m_l = +1, m_s = +1/2

Answer: (C)