Input interpretation
group 2 ions | total number of protons
Total number of protons rankings
1 | beryllium cation | 4 2 | magnesium(I) cation | 12 3 | magnesium cation | 12 4 | calcium cation | 20 5 | strontium cation | 38 6 | barium cation | 56 7 | radium cation | 88