Select the ion.
-no 2
-h2so4
-ai +3

Al+3

Explanation:

Ion is a positively or negatively charged species. A neutral species does not carry any charge.

here only Al has +3 charge. So it is an ion.

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.