Which of the following elements will likely form a negative ion in its ionic compounds?

What is the name of the aluminum ion? Al^–1 Al⁺² Al^–3 Al⁺³?

Match each type of element with the typical trend it follows when forming an ion.

How many valence electrons are in the alkaline earth metal family? Do they form cations or anions?

Predict the charge of the ion formed by each element. a. Sr

Predict the charge of the ion formed by each element. c. I

Each of the following elements is capable of forming an ion in chemical reactions. By referring to the periodic table, predict the charge of the most stable ion of each: c. K

Using the periodic table, predict the charge of the most stable ion of the following elements: d. Br