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When a symbol consists of two letters the first letter is always capitalized while the second letter is lowercase. Some elements do not use their first letters of their English names as their symbols. Elements Correspondences Wiccan Symbols Element Symbols Fifth Element In accordance with what we discussed above here are the Lewis symbols for the first twenty elements in the periodic table. Why do we use symbols for elements . Element symbols also can refer to alchemy symbols for the elements or to the symbols used to describe isotopes. One of the main reasons this was developed was because usingletters was the easiest way to represent the elements. Different elements have different characteristics which are determined by the number of subatomic particles protons neutrons and electrons they haveScientists have found approximately 100 natural elements so far. An element symbol is a one- or two-letter abbreviation for a chemical element name. One side has the Chemical Symbol...

Someday far in the distance future there will be total. Which elements are radioactive and why. Radioactivity Carbon Chemistry En Isotopes Physics Radioactivity Science Glogster Edu 21st Century Multimed Interactive Multimedia Science Chemistry When the atoms of an element have extra neutrons or protons it creates extra energy in the nucleus and causes the atom to become unbalanced or unstable. Why are some elements radioactive . Why are some elements radioactive and some not. Actually all isotopes are radioactive Some are much more radioactive than others. If the nucleus has an excess of internal energy. Carbon-14 is an example of a cosmogenic isotope. The reason they dont fly apart is that th. The unstable nucleus of radioactive atoms emit radiation. There are 118 chemical elements known to humans. The nuclei in which the number of neutrons is more than the number of protons are unstable. The electromagnetic force is very strong and therefore this force is very ...