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All elements are do of atoms.

You are watching: What distinguishes the atoms of one element from another?

There are an ext than a hundred various atoms, yet each facet ptcouncil.netntains just one sort of atom.
Atoms space what do one aspect different indigenous another.
So what makes one atom different from another?
The Greeks thought atoms can not be split into noþeles smaller but they were wrong! Every atom deserve to be split into three different ptcouncil.netmponents - protons, neutrons and also electrons.
The nucleus, or center of an atom, is do of protons, (which have actually a positive electrical charge) and neutrons, which are neutral (in various other words, they have no charge).
Electrons, which have actually a negative charge, move about the center of the atom.
Normally, the number of electrons is same to the variety of protons, which provides atoms electrically neutral.
The number of protons in one atom is the defining feature of an atom. It"s what renders one element different from another. The number of protons in one atom is referred to as its atom number. Oxygen atoms have 8 protons. Therefore the atomic variety of oxygen is 8.
All the facets in the universe space arranged acptcouncil.netrding to their atomic number in the regular table.
Atomic mass
If you add together the variety of protons (or atomic number) and the variety of neutrons in the cell nucleus of an atom, you have the right to calculate the fixed of the atom. Helium (He), atom number two, has two protons and also two neutrons. So the massive number because that Helium is 4.

See more: What Is 21 Cm In Inches - Convert 21 Centimeters To Inches

Isotopes
Atoms with the same number of protons however different numbers of neutron are dubbed isotopes. Uranium-238 and also uranium -235 space two various isotopes the uranium. Uranium- 238 has actually a mass variety of 238. Uranium-235 has a mass variety of 235. Therefore uranium-238 has an ext neutrons than uranium-235. But they are still both atoms of uranium due to the fact that they have actually the same number of protons.
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