Mass number element is equal to
- Atomic mass number element is equal to
- Mass number of an element is equal to the sum of
- Mass number of an element is always equal to the sum of
- The mass number of an element is equal to which of the following
- Mass of element is equal to
- The mass number of an element is equal to its number of neutrons
- The mass number of an element is equal to the total number of
- 38 what is an element's mass number equal to