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Date/Time Thumbnail Dimensions User Comment; current: 11:57, 18 April 2006: 800 × 860 (2 KB): File Upload Bot (Pumbaa80) * '''Description:''' Electron shell diagram for Phosphorus, the 15th element in the periodic table of elements.
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These states are labeled by a set of quantum numbers summarized in the term symbol and usually associated with particular electron configurations, i.e., by occupation schemes of atomic orbitals (for example, 1s 2 2s 2 2p 6 for the ground state of neon-term symbol: 1 S 0).
Atomic number (Z): 15: Group: group 15 (pnictogens) Period: period 3: Block p-block Electron configuration [] 3s 2 3pElectrons per shell: 2, 8, 5: Physical properties; Phase at STP: solid
A phosphoryl group is a trivalent >P(=O)− group, consisting of a phosphorus atom (symbol P) and an oxygen atom (symbol O), where the three free valencies are on the phosphorus atom. While commonly depicted as possessing a double bond (P=O) the bonding is in fact non-classical. [1]
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[72] [63] Phosphorus comprises about 0.1% by mass of the average rock, and consequently, the Earth's supply is vast, though dilute. [31] Peak phosphorus is a concept to describe the point in time when humanity reaches the maximum global production rate of phosphorus as an industrial and commercial raw material.
For phosphorus (element 15) as an example, the concise form is [Ne] 3s 2 3p 3. Here [Ne] refers to the core electrons which are the same as for the element neon (Ne), the last noble gas before phosphorus in the periodic table. The valence electrons (here 3s 2 3p 3) are written explicitly for all atoms.