Glycogen is a compound. Anybody ever hear of glucogen.
Sodium chloride is a compound, not an isotope.
63Cu
Glucogen
The pancreas secretes "glucagon," not glucogen, to reverse hypoglycemia (low blood sugar) which then turns stored glycogen from the liver into glucose.
If an element has one and only one stable isotope, an example is Gold.
For example a thorium isotope is Th-231 or 23190 Th.
An example of an isotope in my house would be carbon-14, which is used in carbon dating to determine the age of organic materials.
An example with a zinc isotope: 81Zn (mass number as superscript before the chemical symbol)
Tc99m
i think you mean glycogen...and they both have to do with sugar.
Each isotope, stable or unstable, has a specific symbol; for example K-40 for potassium 40.
An example of an atom is carbon (C), which has six protons. An example of an ion is a chloride ion (Cl-), which has gained an electron. An example of an isotope is carbon-14 (14C), which has 8 neutrons instead of the usual 6.