Input interpretation
alkaline earth metals | valence
Summary
median | 2 highest | 2 (6 elements) lowest | 2 (6 elements)
Valence rankings
1 | radium | 2 2 | barium | 2 3 | strontium | 2 4 | calcium | 2 5 | magnesium | 2 6 | beryllium | 2