What Is the Oxidation Number of P in H₂PO₄^-

question 85

Multiple Choice

What is the oxidation number of P in H₂PO₄^-?

• A)+4
• B)+5
• C)+6
• D)-5
• E)-6

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Definitions:

Existential Instantiation

A logical principle stating that if something is said to exist, then a specific instance of that thing must also exist.

Universal Generalization

A logical operation that infers a general statement from specific cases, asserting that a property or relation holds for all members of a certain category.

Universal Instantiation

A logical rule that infers from the truth of a universally quantified statement about all members of a domain, the truth of that statement about any specific member.

Quantifier Negation

The process of applying negation to a statement that contains a quantifier, altering its scope and possibly changing the quantifier type (for example, from universal to existential).