"The Nuclear Symbol"

The nuclear symbol consists of three parts:
1.)the symbol of the element.

2.)the atomic number of the element.

3.)the mass number of the specific isotope.

*Here is an example of a nuclear symbol: *



The element symbol, Li, is that for lithium.
The three, subscripted left, is the atomic number and the seven, superscripted left, is the mass number.

Here's another:



The atomic number is:
The number of protons in the nucleus of the atom.
The mass number is:
The number of protons and neutrons in the nucleus of the atom.