Could you pls check back a few questions. The first 1 or 2 digits in each nmber is the family number, so the numbers do not go on a consistant trend.

Thank you

1 answer

Consistent? That is not a trend. Look for general trend. If you do plotting, you see this http://chem.libretexts.org/@api/deki/files/1193/=Ionization_Energy_Graph_IK.png?revision=1