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1. Nonmetal: A nonmetal is a chemical element that mostly lacks metallic properties. Seventeen elements are generally considered nonmetals, though some authors recognize more or fewer depending on the properties considered most representative of metallic or nonmetallic character. (Chemical element that mostly lacks the characteristics of a metal) [100%] 2023-12-17 [Nonmetals] [Periodic table]...
2. Nonmetal: Nonmetals are elements on the periodic table that do not fit into the description of metals. Some of the metalloids are sometimes considered to be nonmetals. [100%] 2023-02-10 [Element Categories] [Chemistry]...
3. Nonmetal: A nonmetal is a chemical element with several properties that are opposite those of a metal. Based on their properties, the elements of the periodic table are generally classified as metals, nonmetals, and metalloids. Only 18 elements of the periodic ... [100%] 2023-02-04
4. Nonmetal: Nonmetal is a term used in chemistry when classifying the chemical elements. On the basis of their general physical and chemical properties, every element in the periodic table can be termed either a metal or a non-metal. [100%] 2023-12-14 [Nonmetals] [Periodic table]...
5. Nonmetal: A nonmetal is a chemical element that, in the broadest sense of the term, has a relatively low density and high electronegativity; they range from colorless gases (like hydrogen) to shiny solids (like carbon, as graphite). They are usually poor ... (Chemistry) [100%] 2023-10-21 [Nonmetals] [Periodic table]...
6. Nonmetal: A nonmetal is a chemical element that mostly lacks distinctive metallic properties. Seventeen elements are widely recognized as nonmetals. (Chemical element that mostly lacks the characteristics of a metal) [100%] 2024-03-05 [Nonmetals] [Periodic table]...
7. Nonmetal: A nonmetal is a chemical element that, in the broadest sense of the term, has a relatively low density and high electronegativity; they range from colorless gases (like hydrogen) to shiny solids (like carbon, as graphite). They are usually poor ... (Chemistry) [100%] 2024-03-05 [Nonmetals] [Periodic table]...
8. Costs of nonmetals: Day to day costs of nonmetals (including metalloids which are here counted as nonmetals) will vary depending on purity, quantity, market conditions, and supplier surcharges. Based on the available literature as of April 2023, the cited costs of most nonmetals ... [65%] 2023-10-11 [Nonmetals] [Costs]...
9. Discovery of the nonmetals: Most nonmetallic elements were discovered after the freezing of mercury in 1759 by the German-Russian physicist Braun and the Russian polymath Lomonosov. Before then, carbon, sulfur and antimony were known in antiquity. (Chemistry) [57%] 2023-12-22 [Nonmetals] [Chemistry]...
10. List of nonmetal monographs: The purpose of this annotated list is to provide a chronological, consolidated list of nonmetal monographs, which could enable the interested reader to further trace classification approaches in this area. Those marked with a ▲ classify the following 14 elements as ... (None) [50%] 2024-04-18 [Nonmetals] [Chemistry-related lists]...
11. Dividing line between metals and nonmetals: The dividing line between metals and nonmetals can be found, in varying configurations, on some representations of the periodic table of the elements (see mini-example, right). Elements to the lower left of the line generally display increasing metallic behaviour ... (Chemistry) [46%] 2023-11-29 [Periodic table]
12. List of alternative nonmetal classes: In chemistry, after nonmetallic elements such as silicon, chlorine, and helium are classed as either metalloids, halogens, or noble gases, the remaining unclassified elements are hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur and selenium. The nonmetallic elements are sometimes instead divided ... (Chemistry) [44%] 2023-11-08 [Metalloids] [Halogens]...
13. List of alternative nonmetal classes: In chemistry, after nonmetallic elements such as silicon, chlorine, and helium are classed as either metalloids, halogens, or noble gases, the remaining unclassified nonmetallic elements are hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur and selenium. The nonmetallic elements are sometimes instead ... (Non metallic elements) [44%] 2024-08-12 [Metalloids] [Halogens]...