The effective nuclear charges for sodium and magnesium are
Chapter 4, Problem 63QP(choose chapter or problem)
Problem 63QP
The effective nuclear charges for sodium and magnesium are 2.51 and 3.31, respectively. Use this information and the atomic radii given in Figure 4.6 to compare the attractive force between the nucleus in each atom and the valence electron that would be removed by the first ionization.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer