Answer:
Key Takeaways: Number of Protons, Neutrons, and Electrons
Atoms are made of protons, neutrons, and electrons.
Protons carry a positive electrical change, while electrons are negatively charged, and neutrons are neutral.
A neutral atom has the same number of protons and electrons (charges cancel each other out).
An ion has an unequal number of protons and electrons. If the charge is positive, there are more protons than electrons. If the charge is negative, electrons are in excess.
You can find the number of neutrons if you know the isotope of the atom. Simply subtract the number of protons (the atomic number) from the mass number to find the remaining neutrons.
Get Basic Information About Elements
You'll need to gather basic information about the elements to find the number of protons, neutrons, and electrons. Fortunately, all you need is a periodic table.
For any atom, what you need to remember is:
Number of Protons = Atomic Number of the Element
Number of Electrons = Number of Protons
Number of Neutrons = Mass Number - Atomic Number
Find the Number of P