what stable ion does bromine form?\nb. br1\nd. br7\nc. br +7\na. br-

Answer

Explanation:

Step1: Analyze bromine's group

Bromine is in Group 17 (halogens) of the periodic table. Halogens have 7 valence - electrons.

Step2: Determine ion - formation

To achieve a stable noble - gas electron configuration, bromine will gain 1 electron. When it gains 1 electron, it forms an anion with a charge of - 1.

Answer:

a. Br-