In ammonium-phosphomolybdate, the oxidation state of Mo is

Question

Canvas Classes · Accepted Answer

Ammonium phosphomolybdate formula:  or more commonly written as

Finding oxidation state of Mo in :

Let O.S. of Mo =

Verification: In the phosphomolybdate complex :
- P is in +5 state
- Each Mo is in +6 state
- O is in −2 state

Ammonium phosphomolybdate is used as a yellow precipitate test for phosphate ions in qualitative analysis.

Answer: +6

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