Is the formula for Mercurous Phosphate (or Mercury (I) Phosphate) (Hg2)3(PO4)2 or Hg3PO4? I have looked it up on the Internet and I have seen it both ways.

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asked Feb 18, 2018 131k views

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Dhaval Solanki · Answer 1 · 2018-02-23T00:36:05+0000

In the compound mercurous phosphate, the mercury atoms are exhibiting a valence charge of +1; on the other hand, phosphate ions possess a charge of -3.

Therefore, when the two ions combine, the final compound will have the formula:
Hg₃PO₄

The formula (Hg₂)₃(PO₄)₂ just contains two units of mercury (I) phosphate.

Is the formula for Mercurous Phosphate (or Mercury (I) Phosphate) (Hg2)3(PO4)2 or Hg3PO4? I have looked it up on the Internet and I have seen it both ways.

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