Answer
a. Al 3+ has 13 protons and 10 electrons.
b. S 2- has 16 protons and 18 electrons.
c. I- has 53 protons and 54 electrons.
d. Ag + has 47 protons and 46 electrons.
Work Step by Step
a. Al 3+ has 13 protons and 10 electrons.
Atomic number=13, thus the proton number is also 13 as the number of protons equals the atomic number.
The number of protons = the number of electrons, however since the charge is +3, this means that there are three fewer electrons.
b. S 2- has 16 protons and 18 electrons.
Atomic number=16, thus the proton number is also 16 as the number of protons equals the atomic number.
The number of protons = the number of electrons, however since the charge is -2, this means that there are two more electrons.
c. I- has 53 protons and 54 electrons.
Atomic number=53, thus the proton number is also 53 as the number of protons equals the atomic number.
The number of protons = the number of electrons, however since the charge is -1, this means that there is one more electron.
d. Ag + has 47 protons and 46 electrons.
Atomic number=47, thus the proton number is also 47 as the number of protons equals the atomic number.
The number of protons = the number of electrons, however since the charge is +1, this means that there is one fewer electron.
