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Bookmark or Share- Third Period - WikipediaThe Third Period is an ideological concept adopted by the Communist International (Comintern) at its Sixth World Congress, held in Moscow in the summer of 1928. It set policy until reversed when the Nazis took over Germany in 1933.
- Period 3 element - WikipediaA period 3 element is one of the chemical elements in the third row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behavior of the elements as their atomic number increases: a new row is begun when chemical behavior begins to repeat ...
- 2.2: The Periodic Table - Chemistry LibreTextsDetermining the period in which an element is located simply requires taking the time to find the box containing the given elemental name or symbol and then counting from the top of the periodic table. Silicon (Si) is located in period 3 (the third row from the top of the periodic table). Cd (cadmium) is located in period 5.
- Physical Properties of Period 3 Oxides - Chemistry LibreTextsPeriod 3 Elements. Physical Properties of Period 3 Oxides. Page ID. Jim Clark. Truro School in Cornwall. This page explains the relationship between the physical properties of the oxides of Period 3 elements and their structures (including sodium to chlorine; argon is omitted because it does not form an oxide). A summary of the trends. The oxides:
- Period 3 element - LearnoolPeriod 3 elements are the set of chemical elements found in the third row or period of the periodic table. This row contains eight elements: sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar).
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