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Answer :
To determine the charge of a lead ion that has 82 protons and 80 electrons, we need to understand how an ion's charge is calculated.
1. Identify the number of protons: The charge contributed by protons is positive. A proton has a charge of [tex]\(+1\)[/tex]. For this ion, there are 82 protons.
2. Identify the number of electrons: Electrons contribute a negative charge. Each electron has a charge of [tex]\(-1\)[/tex]. This ion has 80 electrons.
3. Calculate the net charge: The ion's charge is determined by subtracting the number of electrons from the number of protons. This can be expressed in the equation:
[tex]\[
\text{ion charge} = \text{number of protons} - \text{number of electrons}
\][/tex]
For this ion:
[tex]\[
\text{ion charge} = 82 - 80
\][/tex]
4. Perform the subtraction:
[tex]\[
82 - 80 = 2
\][/tex]
Hence, the charge of the ion is [tex]\(+2\)[/tex].
The correct equation to use from the options given is (B) [tex]\( \text{ion charge} = 82 - 80 \)[/tex]. The calculated charge of this lead ion is [tex]\(+2\)[/tex], indicating it carries a positive charge.
1. Identify the number of protons: The charge contributed by protons is positive. A proton has a charge of [tex]\(+1\)[/tex]. For this ion, there are 82 protons.
2. Identify the number of electrons: Electrons contribute a negative charge. Each electron has a charge of [tex]\(-1\)[/tex]. This ion has 80 electrons.
3. Calculate the net charge: The ion's charge is determined by subtracting the number of electrons from the number of protons. This can be expressed in the equation:
[tex]\[
\text{ion charge} = \text{number of protons} - \text{number of electrons}
\][/tex]
For this ion:
[tex]\[
\text{ion charge} = 82 - 80
\][/tex]
4. Perform the subtraction:
[tex]\[
82 - 80 = 2
\][/tex]
Hence, the charge of the ion is [tex]\(+2\)[/tex].
The correct equation to use from the options given is (B) [tex]\( \text{ion charge} = 82 - 80 \)[/tex]. The calculated charge of this lead ion is [tex]\(+2\)[/tex], indicating it carries a positive charge.
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