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What is the empirical formula of a compound that contains 69.24 percent gallium and 30.76 percent phosphorus?
BroganWallace
Tha gram Atomic Mass of gallium is 69.723 and the gram atomic mass of phosphorus is 30.9738. 69.24/69.723 is 0.9931 to the justified number of significant digits, while 30.76/30.9738 is also 0.9931 to the justified number of significant digits. These two quotients have as their nearest small whole number ratios 1:1; therefore, the empirical formula of the compound is GaP. This accords with the expectation from the fact that gallium is in wide form Periodic Table column 13 with three valence electrons and phosphorus is in wide form periodic table column 15 with 5 valence electrons. A gallium atom can donate three electrons to a phosphorus atom, resulting in both ions having completely filled outer electron shells.
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