Answer:
<h3>letter D i think</h3>
Explanation:
correct me if im wrong
Valency is the number of electrons present in the outermost shell.
The third option. The angular quantum number (

) can be any integer between 0 and

. Therefore, for the third option,

can be 0, 1, 2, 3, or 4—but not 5.
<u>Answer:</u> The solution will be an acidic solution when ammonium perchlorate is dissolved in water.
<u>Explanation:</u>
Salts are formed when an acid reacts with a base during a neutralization reaction.
- When a strong acid and a weak base reacts, it leads to the formation of acidic salt.
- When a strong base and weak acid reacts, it leads to the formation of basic salt.
- When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of neutral salts.
Ammonium perchlorate is formed by the combination of perchloric acid
which is a strong acid and ammonium hydroxide
which is a weak base.
So, the salt formed which is ammonium perchlorate is an acidic salt and its dissolution in water will make the solution acidic in nature.

Hence, the solution will be an acidic solution when ammonium perchlorate is dissolved in water.