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It is NOT always the same as the number of protons and electrons. For example, hydrogen has one proton and one electron, but it doesn't have any neutrons at all !


All helium atoms have 2 protons. Isotopes occur when atoms of the same element have different masses. Since the number of protons of an element doesn 't ...


The periodic table lists every element on Earth and information about those elements. With this table ... An atom is made up of protons, electrons and neutrons.


The Periodic Table of the. Elements. ❖All of the elements are composed of ... form an atom are protons, neutrons, and electrons. The center of the atom is called ...


The title describes it all! Maybe using the test isn't such a great idea, but hey, do what you want!


Learn how atoms are made up of protons, neutrons, and electrons. Elements are defined by the atomic number, the number of protons in the nucleus. ... Those hundreds of pounds are...


All elements are made of atoms, and an atom is made up from 3 basic particles: ... the same number of protons and electrons but different numbers of neutrons.


These smaller particles - the protons, neutrons and electrons - all have different ... Every element has a unique Element Symbol and a unique Atomic Number ...


That means a carbon atom has 6 protons, 6 neutrons, and 6 electrons. Since carbon is in ... Make the rest of the orbits for the element that you chose. The orbits ...


The very simplest atoms of all, those of the element hydrogen, have a nucleus consisting of just a single particle, known as a proton (symbol: p). The next ...