Periodic Table: Main Group Element Charges Practice Problems

A representative element forms an ion with the symbol X²⁻. If X is in period 3, provide the name of the element.

A representative element forms an ion with the symbol A⁺. If A is in period 4, determine the element.

Identify the charges of each element when they form ions

a. N

b. Ca

c. K 

d. Cl

Identify which among the elements given below loses or gains electrons.

A. Pb

B. Al

C. N

D. I

Using the atomic numbers given below, write the symbol (including the charge) of the simple cation/anion that each of the elements can most readily form.