![Hach TNT844 TNTplus® Spectrophotometer Chemistry, High Range Phosphorus, 0.5 to 5 mg/L PO4-P; 25/PK from Cole-Parmer Hach TNT844 TNTplus® Spectrophotometer Chemistry, High Range Phosphorus, 0.5 to 5 mg/L PO4-P; 25/PK from Cole-Parmer](https://pim-resources.coleparmer.com/item/l/hach-tnt844-tntplus-spectrophotometer-chemistry-high-range-phosphorus-0-5-to-5-mg-l-po4-p-25-pk-9951535.jpg)
Hach TNT844 TNTplus® Spectrophotometer Chemistry, High Range Phosphorus, 0.5 to 5 mg/L PO4-P; 25/PK from Cole-Parmer
![Annual average river orthophosphate concentration (mg/l as PO4-P) in 2008, by river basin district — European Environment Agency Annual average river orthophosphate concentration (mg/l as PO4-P) in 2008, by river basin district — European Environment Agency](https://www.eea.europa.eu/data-and-maps/figures/annual-average-river-orthophosphate-concentration-1/fw110-map2.4-soer2010-eps/FW110_Map2.4.eps.75dpi.png/at_download/image)
Annual average river orthophosphate concentration (mg/l as PO4-P) in 2008, by river basin district — European Environment Agency
![Hach TNTplus® Phosphorus Vial Test, Low Range Reactive and Total, 0.05 to 1.5 mg/L PO4-P (0.15 to 4.5 mg/L PO4), 25 Tests, TNT843 | USABlueBook.com Hach TNTplus® Phosphorus Vial Test, Low Range Reactive and Total, 0.05 to 1.5 mg/L PO4-P (0.15 to 4.5 mg/L PO4), 25 Tests, TNT843 | USABlueBook.com](https://www.usabluebook.com/product/image/medium/202103_0.jpg)
Hach TNTplus® Phosphorus Vial Test, Low Range Reactive and Total, 0.05 to 1.5 mg/L PO4-P (0.15 to 4.5 mg/L PO4), 25 Tests, TNT843 | USABlueBook.com
![Can someone explain why does P in PO4^-3 contain a d-subshell with two valence electrons? TIA. : r/MCAT2 Can someone explain why does P in PO4^-3 contain a d-subshell with two valence electrons? TIA. : r/MCAT2](https://preview.redd.it/can-someone-explain-why-does-p-in-po4-3-contain-a-d-v0-xrx2od2uxzu91.png?auto=webp&s=fb77a37fe45fafd5fce561eb20d74f90f9aaa73b)
Can someone explain why does P in PO4^-3 contain a d-subshell with two valence electrons? TIA. : r/MCAT2
![SOLVED: The hybridization of phosphate ion (PO4'-) central P hybridization is sp* and the electrons are delocalized Select one Ttue Ealse SOLVED: The hybridization of phosphate ion (PO4'-) central P hybridization is sp* and the electrons are delocalized Select one Ttue Ealse](https://cdn.numerade.com/ask_images/9208988a671744ea8d8bcb90dfefdcb2.jpg)
SOLVED: The hybridization of phosphate ion (PO4'-) central P hybridization is sp* and the electrons are delocalized Select one Ttue Ealse
Orthophosphate and Sulfate Utilization for C–E (E = P, S) Bond Formation via Trichlorosilyl Phosphide and Sulfide Anions | Journal of the American Chemical Society
![Phosphate Cell Test photometric, 0.05-5.00 mg/L (PO4-P), 0.2-15.3 mg/L (PO43-), 0.11-11.46 mg/L (P2O5), Spectroquant® | Sigma-Aldrich Phosphate Cell Test photometric, 0.05-5.00 mg/L (PO4-P), 0.2-15.3 mg/L (PO43-), 0.11-11.46 mg/L (P2O5), Spectroquant® | Sigma-Aldrich](https://www.sigmaaldrich.com/deepweb/content/dam/sigma-aldrich/product3/128/cell_test_kits_cell_test_kits_all.jpg/_jcr_content/renditions/cell_test_kits_cell_test_kits_all-large.jpg)