Question

The chloride of metal has the formula MCl3. The formula of its phosphate will be.

Answer 1

PO43- will be the answer of phosphate

Answer 2

$MPO_{4}$

Explanation:

• Chlorine has an overall charge of -1. Thus, the metal's valency/oxidation state in chloride $MCl_{3}$ would be +3.
• Similarly, the phosphate ion has a valency/oxidation state of -3($PO_{4}^{3-} }$). Since the oxidation state of both is equal, the combination would be made in the portion ratio.
• Through cross-multiplication of their oxidation states, we get the formula of phosphate as $MPO_{4}$.

Learn more: Write the chemical formulae

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