Every nucleus of every element contains at least 1 proton. Every element except hydrogen also contains neutrons.
This is 100% dependant on the element and the isotope of the element. Not every nucleus is the same.
All atoms of the same element contain the same number of protons in the nucleus. This is what defines the element and gives it its unique characteristics.
An element's nucleus basically contains protons and neutrons. Electrons rotate around the nucleus of an atom.
Electrons and the atomic nucleus; the nucleus contain protons and neutrons (which are formed from quarks and gluons).
In a Hydrogen nucleus there is a proton. Hydrogen is the only element to not have a neutron in it's nucleus.
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protons in its nucleus, which defines the element.
Every atom categorised within the same periodic element should contain the same atomic number, which represents the number of protons within the nucleus. Each element is unique in how many protons reside in one atom, for example all oxygen atoms would contain eight protons and hydrogen atoms would only contain one proton.
Carbon
The number of electrons outside the nucleus depends on the atomic number of the element. For neutral atoms, the number of electrons is equal to the number of protons in the nucleus to maintain a balanced charge.
Each element has a unique number of protons in the nucleus of their atoms.
An element can be identified by the number of protons in the nucleus of its atoms.