We're being asked to identify the ion with the given number of protons and electrons.
You can determine the identity of the element using its atomic number:
Atomic number (Z):
• represents the identity of the element
• reveals the number of protons
• in a neutral element:
# of protons = # of electrons
a. 19 protons and 18 electron
# of protons = 19
# of electrons = 18
• The # of protons is the same as the atomic number of the element:
Identify the ion with the given number of protons and electrons
Mg2+ V3+ Mn2+ Ar S2- Ba2+
Fe3+ Cs+ Fe2+ Fe2+ Co2+ K+
a. 19 protons and 18 electrons
b. 16 protons and 18 electrons
c. 25 protons and 23 electrons
d. 26 protons and 24 electrons
e. 55 protons and 54 electrons
f. 26 protons and 23 electrons
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Subatomic Particles concept. You can view video lessons to learn Subatomic Particles. Or if you need more Subatomic Particles practice, you can also practice Subatomic Particles practice problems.