Question

graded formative: unit 2 study guide part 1
a chlorine atom (cl) differs from a chlorine ion (cl⁻) ion in that the chlorine atom has one

Explanation:

Step1: Understand ion - formation

An ion is formed when an atom gains or loses electrons. A chlorine ion ($Cl^-$) is a chlorine atom ($Cl$) that has gained one electron.

Step2: Determine the difference

Since the chlorine ion has one more electron than the chlorine atom, the chlorine atom has one less electron than the chlorine ion.

Answer:

less electron