Answer
For the cations given, the group number is the same as the charge. Rubidium would likely form a 1+
ion since it is in group 1. The formula for the cation formed from the barium atom would be: Ba2+.
The formula for the anion formed from the nitrogen atom would be: N3-.
Work Step by Step
For the cations given, the group number is the same as the charge. Rubidium would likely form a 1+
ion since it is in group 1. The formula for the cation formed from the barium atom would be: Ba2+.
The formula for the anion formed from the nitrogen atom would be: N3-.