Atomic Number 
The number of protons within the nucleus of its atom. The number of protons also give the atom its atomic number and uniquely identifies an element. For example, the atomic number of Carbon is 6, whilst for Nitrogen it is 7.
Atomic Number
The number of protons within the nucleus of its atom. The number of protons also give the atom its atomic number and uniquely identifies an element. For example, the atomic number of Carbon is 6, whilst for Nitrogen it is 7.