Question

multiple - choice question
choose the larger item.
bromine atom (br)
bromine anion (br - 1)
rewatch

Explanation:

Step1: Understand ion - formation principle

When an atom gains an electron to form an anion, the electron - electron repulsion increases.

Step2: Analyze size change

The increased electron - electron repulsion in the bromine anion ($Br^-$) causes the electron cloud to expand compared to the bromine atom ($Br$). So, the bromine anion is larger.

Answer:

Bromine Anion (Br - 1)