Protons and Electrons: 20 Nuetrons: mass - atomic number = 40 - 20 = 20 Protons and electrons are given by the atomic number. Number of neutrons is given by mass subract atomic number. Protons are usually equal to electrons, assuming the el...
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It's supposed to represent radiation emanating from an atom. Read more about its origin here.
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The atomic symbol for aluminum is Al. ChaCha
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I assume you mean the 'trefoil' symbol which consists of a circle containing a small inner circle and three radiating shapes, each shape occupying 60 deg angle with 60 deg between each shape. Sometimes the background is yellow and the appli...
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The symbol for Iodine is the letter l and it's atomic number is 53. Call 1-800-2ChaCha unlimited.
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The nuclear symbol indicates the composition of the nucleus. It is used to distinguish between isotopes in chemistry. ChaCha on!
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Helium-3 or He-3, it has 2 protons and 1 neutron
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