Element X reacts with chlorine to form a compound with the formula XCl₂. The oxide of element X is basic. Element X is ________. A)Rb B)Ca C)Al D)P E)H

Question

Quizplus · Accepted Answer

The clue here is that the oxide of element X is basic, which means it must be a metal. Therefore, we can eliminate choices C and D (which are nonmetals) and choice E (which is hydrogen, a nonmetal). Among the remaining choices, B (calcium) is a metal that can form a chloride with the formula CaCl2, which is similar to the given formula XCl₂.

Element X Reacts with Chlorine to Form a Compound with the Formula