karen julieth
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Sodio Elemento quimico - 11 Na

Sodium is a chemical element with the symbol Na (from Latin: natrium) and atomic number It is a soft, silvery-white, highly reactive metal and is a member of the alkali metals; its only stable isotope is

Xenon Elemento quimico - 54 Xe

54 Xenon -Xe- The xenon gas in this tube is being excited by a high voltage discharge, creating a lovely pale violet glow. Xenon-filled tubes driven by high voltage capacitors are the basis for modern photographic flashes.

Francio Elemento quimico - 87 Fr

87 Francium -Fr- An ultra-rare radioactive alkali metal found in U and Th ores where it forms as a result of unusual nuclear reactions. Never isolated in visible amounts.

elementos quimicos

elementos quimicos

imagenes del sistema endocrino - Buscar con Google

imagenes del sistema endocrino - Buscar con Google