<P> One or more protons are present in the nucleus of every atom ; they are a necessary part of the nucleus . The number of protons in the nucleus is the defining property of an element , and is referred to as the atomic number ( represented by the symbol Z ) . Since each element has a unique number of protons , each element has its own unique atomic number . </P>
<P> One or more protons are present in the nucleus of every atom ; they are a necessary part of the nucleus . The number of protons in the nucleus is the defining property of an element , and is referred to as the atomic number ( represented by the symbol Z ) . Since each element has a unique number of protons , each element has its own unique atomic number . </P>
where is the proton found in an atom
where is the proton found in an atom
nucleus
nucleus