Practice: Which of the following answers give the correct number of subatomic particles for 
?
Isotopes are atoms of an element that have the same atomic number, but different mass number.
The Atomic View of Isotopes
Concept #1: Isotopes
Isotopes are elements with the same number of protons, but different number of neutrons.
Example #1: Calcium-43 represents one of the isotopes for the calcium atom. If the number 43 represents its mass number, determine the correct numbers for its subatomic particles.
Practice: Which of the following answers give the correct number of subatomic particles for 
?
Practice: Fill in the gaps for the following table of atoms.
