Question

choose the examples for anions with names, charges and chemical symbols. select all that apply a bromide, $br^-$ b chloride, $cl^-$ c barium, $ba^{+2}$ d oxide, $o^{2-}$

Explanation:

Anions are negatively charged ions.

• Option a: Bromide ($Br^-$) is a negative ion (anion) as it has a -1 charge.
• Option b: Chloride ($Cl^-$) is a negative ion (anion) with a -1 charge.
• Option c: Barium ($Ba^{+2}$ or $Ba^{2+}$) is a positive ion (cation), not an anion.
• Option d: Oxide ($O^{2-}$) is a negative ion (anion) with a -2 charge.

So the correct options are those representing anions.

Answer:

a. Bromide, $Br^-$
b. Chloride, $Cl^-$
d. Oxide, $O^{2-}$