TLS Online TPP Program

#Question id: 19507


Which of the following electronic configurations of an atom has the lowest ionisation enthalpy?

#SCPH05 I Biotechnology
  1. 1s2 2s2 2p3
  2. 1s2 2s2 2p6 3s1
  3. 1s2 2s2 2p6
  4. 1s2 2s2 2p5