What is the meaning of atomic number 19?

noun

  • A light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite.
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APAWordNet. (2010). atomic number 19. Retrieved September 20, 2026, from http://smartdefine.org/atomic_number_19/definitions/1258293
ChicagoWordNet. 2010. "atomic number 19" http://smartdefine.org/atomic_number_19/definitions/1258293 (accessed September 20, 2026).
HarvardWordNet 2010, atomic number 19, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/atomic_number_19/definitions/1258293>.
MLAWordNet. "atomic number 19" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/atomic_number_19/definitions/1258293>