An unknown compound has the following chemical formula: PC1x where x stands for a whole number.
Measurements also show that a certain sample of the unknown compound contains 8.0 mol of chlorine and 2.7 mol of phosphorus.
Write the complete chemical formula for the unknown compound.

Henry moseley used x-ray experiments to determine the atomic number of elements. how did his discovery contribute to the development of the periodic table? a.it confirmed that elements should be arranged in strict order of increasing atomic mass. b.it led to elements with similar atomic numbers being grouped together. c.it allowed the elements to be placed in strict order of increasing atomic number. d.it showed that the way mendeleev grouped elements together was completely wrong.