To determine the correct formula for the compound ammonium chloride, we need to understand the components that make up this compound.
### Step-by-Step Solution:
1. Identify the Ions Involved:
- Ammonium chloride is made up of two ions: ammonium ([tex]\(NH_4^+\)[/tex]) and chloride ([tex]\(Cl^-\)[/tex]).
2. Understand the Charges:
- The ammonium ion ([tex]\(NH_4^+\)[/tex]) has a +1 charge.
- The chloride ion ([tex]\(Cl^-\)[/tex]) has a -1 charge.
3. Combine the Ions:
- To form a neutral compound, the total positive and negative charges must balance each other out.
- Since ammonium has a +1 charge and chloride has a -1 charge, one ammonium ion will combine with one chloride ion to neutralize the charges.
4. Write the Chemical Formula:
- Each ammonium ion pairs with one chloride ion to form ammonium chloride, resulting in the formula [tex]\(NH_4Cl\)[/tex].
### Conclusion:
The correct formula for ammonium chloride is [tex]\(NH_4Cl\)[/tex].
So, the final answer is:
[tex]\[ \boxed{NH_4Cl} \][/tex]
