A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. What is the chemical formula of this compound?

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The compound has : Phosphorus = 1 atom Chlorine = 3 atoms Oxygen = 2 atoms Now phosphorus has a charge of -5 and lies at the top of the periodic table among the others. Then comes oxygen with a charge of -2 and then chlorine with a charge of -1. So the formula of the compound will be POCl3. The chemical name of the compound POCl3 is Phosphoryl Chloride. The charges of the atoms cancel each other and the neutral compound Phosphoryl Chloride is formed.

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