Answer
The common charges for the derived ion of each element is:
a. Mg: +2
b. I: -1
c. Se: -2
d. Rb: +1
Work Step by Step
1. Identify the group in a periodic table.
a. Mg: 2A
b. I: 7A
c. Se: 6A
d. Rb: 1A
2. Use figure 3.2 to determine the charge of the derived ions:
a. +2
b. -1
c. -2
d. +1
