Which of the following sets of quantum numbers describes the electron which is removed most easily from a potasium atom in its gound state?

Options

A. n = 3, l = 1, `m_l` = 1, `m_s` = – 1/2
B. n = 2, l = 1, `m_l` = 0, `m_s` = – 1/2
C. n = 4, l = 0, `m_l` = 1, `m_s` = + 1/2
D. n = 4, l = 0, `m_l` = 0, `m_s` = + 1/2

Answer

D