* Atomic Mass is Not Just Neutrons: The atomic mass of an atom is primarily determined by the number of protons and neutrons in its nucleus.
* Protons Determine the Element: The number of protons defines the element. For example, all atoms with 6 protons are carbon atoms, regardless of their number of neutrons.
* Isotopes: Atoms of the same element can have different numbers of neutrons. These are called isotopes.
To calculate the atomic mass, you need to know:
1. The number of protons (atomic number): This tells you the element.
2. The number of neutrons: You've provided this (16).
Example:
Let's say the atom with 16 neutrons also has 8 protons. This means it's an oxygen atom (oxygen has 8 protons). The approximate atomic mass would be:
* 8 protons (1 atomic mass unit each) + 16 neutrons (1 atomic mass unit each) = 24 atomic mass units (amu)
Important Note: The atomic mass on the periodic table is an average of all the isotopes of an element. It's not the exact mass of any single isotope.
