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WordNet-Online
Definitions from WordNet
Noun atomic number 21 has 1 sense
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Definitions from the WebAtomic Number 21Description:The atomic number 21 is the number of protons found in the nucleus of an atom of the chemical element scandium. It is represented by the symbol Sc and is part of the transition metals group. Scandium is a silvery-white metal that is relatively rare and is known for its lightness, high melting point, and strength. Senses and Usages:1. ChemistryIn chemistry, the atomic number 21 refers specifically to the number of protons found in a scandium atom. It determines the element's position in the periodic table and its chemical properties. Example sentence: The atomic number 21 of scandium indicates that it has 21 protons in its nucleus. Related products: Scandium Elements on Amazon 2. TechnologyIn technology, atomic number 21 may be referenced in the context of materials engineering or research on scandium. Scandium alloys have potential applications in aerospace, sports equipment, and electronic devices. Example sentence: The use of scandium alloys with atomic number 21 has enhanced the performance of lightweight bicycle frames. Related products: Scandium Alloys on Amazon 3. PhysicsIn physics, atomic number 21 is significant in understanding atomic structure, electron configurations, and isotopes of scandium. It contributes to studying the properties and behavior of scandium at the atomic level. Example sentence: The atomic number 21 affects the electron configuration of scandium atoms. Related products: Scandium Physics Books on Amazon | ||||
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