Answer
a. Na+ has 11 protons and 10 electrons.
b. Ba+2 has 56 protons and 54 electrons.
c. O-2 has 8 protons and 10 electrons.
d. Co +3 has 27 protons and 24 electrons.
Work Step by Step
a. Na+ has 11 protons and 10 electrons. Na has an atomic number of 11, thus the proton number is also 56 as the number of protons equals the atomic number. The number of protons equals the number of electrons, however since the charge is +1, this means that there is one less electron.
b. Ba+2 has 56 protons and 54 electrons. Ba has an atomic number of 56, thus the proton number is also 56 as the number of protons equals the atomic number. The number of protons equals the number of electrons, however since the charge is +2, this means that there are two fewer electrons.
c. O-2 has 8 protons and 10 electrons. Oxygen has an atomic number of 27, thus the proton number is also 8 as the number of protons equals the atomic number. The number of protons equals the number of electrons, however since the charge is -2, this means that there are two more electrons.
d. Co +3 has 27 protons and 24 electrons. Co has an atomic number of 27, thus the proton number is also 27 as the number of protons equals the atomic number. The number of protons equals the number of electrons, however since the charge is +3, this means that there are three fewer electrons.
