They are called isotopes. eg we have different isotopes of carbon
Atomic number refers to the number of protons in an atom.
The atomic number of an element refers to the number of protons.
The atomic number of an element refers to the number of protons.
number of electons
Z, or the atomic number, represents the number of protons in a element as opposed to A, which is the mass number, the number of protons and neutrons.
Milk is a solution of many different atoms. Atomic mass only refers to the mass of a single type of atom. Milk may have a "molecular mass" but you need to determine all of the different atoms in milk and then add their masses together.
The atomic umber of an element listed in the periodic table refers to number of protons in the element. Atomic number is equal to number of protons.
The atomic mass is approximately the sum of the number of protons and neutrons.
Either the number of protons or the number of electrons in a neutral atom is equivalent to its atomic number.
The atomic number of an element refers to the number of protons in the nucleus within the element. This is how the element is identified.
Atomic number
No, the atomic number refers to the number of protons in an atom. There are 13 protons in an aluminum atom, hence the atomic number is 13.