To determine the overall charge on the nitride ion, we need to consider the number of protons and electrons it has. Here are the detailed steps:
1. Identify the charges of protons and electrons:
- Each proton carries a charge of [tex]\( +1 \)[/tex].
- Each electron carries a charge of [tex]\( -1 \)[/tex].
2. Count the number of protons and electrons in the nitride ion:
- The nitride ion has 7 protons.
- The nitride ion has 10 electrons.
3. Calculate the total positive charge contributed by the protons:
- Total charge from protons = [tex]\( 7 \times (+1) = +7 \)[/tex].
4. Calculate the total negative charge contributed by the electrons:
- Total charge from electrons = [tex]\( 10 \times (-1) = -10 \)[/tex].
5. Determine the overall charge of the ion:
- Overall charge = Total charge from protons + Total charge from electrons.
- Overall charge = [tex]\( +7 + (-10) = +7 - 10 = -3 \)[/tex].
Therefore, the overall charge on the nitride ion is [tex]\(-3\)[/tex].
So, the correct answer is:
[tex]\[
-3
\][/tex]
