Atomic number = Number of protons
The Atomic Number tells us the position of the element in the Periodic Table. It also tells us the number of protons and electrons in an atom of that element. The Atomic Mass/Weight is different. The Atomic Mass is the total numbers of nucleons ( protons and neutrons) in the nucleus of an atom. For a given element the atomic mass can vary. This is because the nucleus may have a different number of neutrons. These different masses of a given element are named 'Isotopes'.
The atomic mass number tells us the total number of protons and neutrons in an atom's nucleus. It is used to determine the mass of an atom and is necessary for calculating the atomic weight of an element.
You can tell if a substance is an element or not by it's atoms. If it's a pure element, it will only have one type of atom (e.g. Copper atoms). If it's not an element it will have two or more types of atoms in it (e.g. Copper, Carbon and Lithium atoms). You can tell which element an atom is by the amount of electrons it has (atomic number) For Example: Hydrogen: 1 electron: Atomic Number 1 Helium: 2 electrons: Atomic Number 2 Molybdenum: 42 electrons: Atomic Number 42 Seaborgium: 106 electrons: Atomic Number 106
Silicone is a metal element. Atomic mass of it is 28.
The number of PROTONS in the NUCLEUS is responsible for the type of the atomic element.
The atomic number is the number of protons in the nucleus of an element. It is what determines what kind of an element it is. When you change the number of protons in the nucleus, you change the type of element.
Only one type of atom have atomic number 26, which is iron, Fe. The atomic number is unique to each element and is the number of protons in the atomic nuclei of that element. The number of protons identifies an element.
An element is a combination of one type of atom. An example of an element id Iodine [I]. Iodine has an atomic number of fifty three and an atomic mass of1267 x 10[-1 exponent]. Soup cannot be a element, because soup is not a type of atom.
Radium is an element, atomic number 88.
Fermium is an artificial element, solid, metal, radioactive, actinoid, atomic number 100.
The atomic number, which represents the number of protons in an atom's nucleus, determines the type of atom. It defines the element's identity and its position on the periodic table based on the number of protons.
The Atomic Mass is the total mass of all the sub atomic particles (i.e. the mass of the whole atom): Electrons, Neutrons and Protons. Therefore, it identifies isotopes (as they have different number of sub atomic particales - even for the same element) and thus total mass differs. There can be a fair amount of difference between the Atomic Mass of the most common isotope of an element and its Atomic Weight - which is averaged (weighted average). This makes a difference for single atom calculations, but makes little real difference in bulk calculations.