Top Answer. In the compound zinc phosphide the charge on the phosphide ion is 3-. A stable ionic compound is electrically neutral, where electrons are shared between cations and anions to complete outer electron shells or octets. In the compound zinc phosphide the charge on the zinc ion is 2+. Formula: Copper(II) Phosphide Cu3P2 Molar Mass, Molecular Weight. Binary phosphides. An ionic formula, like \(\ce{NaCl}\), is an empirical formula. Log Octanol-Water Partition Coef (SRC): Log Kow (KOWWIN v1.67 estimate) = -0.77 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 480.00 (Adapted Stein & Brown method) Melting Pt (deg C): 90.27 (Mean or Weighted MP) VP(mm Hg,25 deg C): 6.09E-011 (Modified Grain … This formula merely indicates that sodium chloride is made of an equal number of sodium and chloride ions. Li 2 O MgF 2 Al 2 S 3 K 3 N A metal comes first in the name and formula of the compounds in Model 2.. Potassium hydrogen phosphate is K2HPO4. Median response time is 34 minutes and may be longer for new subjects. Barium phosphide is a binary ionic compound (a metal + a non-metal). Its position on the periodic table gives an indication of the charge (not always enough information, but in that case you need to be told more.) So ... Write the element symbols for barium and phosphide (phosphide is phosphorus on the P-table). A 3 to 2 ration of ions is necessary for the compound zinc phosphide. Zn 3 P 2 is a II-V semiconductor with a direct band gap of 1.5 eV and may have applications in photovoltaic cells. Determine the charge of each element using the Periodic Table. Cupric Phosphide. Zinc has a 2+ charge and Phosphide has a 3 A second compound exists in the zinc-phosphorus system, zinc diphosphide (ZnP 2 American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows … Q: How do you calculate dipole moment? The “-ide” ending tells you that it is a single element, phosphorus. A balanced formula has a neutral electrical charge or net charge of zero. Determining the Formula of an Ionic Compound . *Response times vary by subject and question complexity. What is the ionic formula for lithium oxide? Silver Phosphide is a semiconductor used in high power, high frequency applications and in laser diodes. An example of a group 1 Predicted data is generated using the US Environmental Protection Agency’s EPISuite™. 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