Give the definition and examples of isobars and isotopes.

(N/A) Isobars: Isobars are atoms of different elements that have the same mass number but different atomic numbers.
Example: ${ }_{6}^{14}C$ and ${ }_{7}^{14}N$ both have a mass number of $14$.
Isotopes: Isotopes are atoms of the same element that have the same atomic number but different mass numbers.
Example: Hydrogen has three isotopes: Protium $({ }_{1}^{1}H)$,Deuterium $({ }_{1}^{2}H)$,and Tritium $({ }_{1}^{3}H)$.