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A short film about the chemistry of Phosphorus, presented by The Periodic Table of Videos.
Phosphorus (P) has an atomic mass of 15. Find out about its chemical and physical properties, states, energy, electrons, oxidation and more.
Periodic Table. Explore this collection of videos on each element in the periodic table. Featuring Murray Robertson’s Visual Elements annimated artwork and videos from the University of Nottingham's Periodic Table of Videos.
This formula indicates that there are three calcium ions (Ca 2+) for every two phosphate \(\left(\ce{PO4^{3-}}\right)\) groups. The \(\ce{PO4^{3-}}\) groups are discrete units, each consisting of one phosphorus atom and four oxygen atoms, and having an overall charge of 3−.
Commercially, phosphorus compounds are used in the manufacture of phosphoric acid (H3PO4) (found in soft drinks and used in fertilizer compounding). Other compounds find applications in fireworks and, of course, phosphorescent compounds which glow in the dark.
17 Σεπ 2014 · Lets look at an example: "How many sodium ions are there in a solution of sodium chloride of concentration #58.5 g.dm^(-3) ?# We need to convert this into #mol.dm^(-3)# . To do this we add up the #A_r# values to get the relative formula mass.
Table \(\PageIndex{2}\) lists the ion names and ion formulas of the most common polyatomic ions. For example, \(\ce{NO3^{−}}\) is the nitrate ion; it has one nitrogen atom and three oxygen atoms and an overall 1− charge.
