What Is the Oxidation Number of P in PO₄^3-

question 41

Multiple Choice

What is the oxidation number of P in PO₄^3-?

• A) +5
• B) +3
• C) -2
• D) -3
• E) -5

Understand the role of control groups in experimental research.

Recognize the purpose and methodology of field experiments.

Identify the importance of naturalistic observation in collecting unbiased data.

Understand the criteria for drawing cause-and-effect conclusions from experimental data.

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Definitions:

Tonsils

Lymphoid organs located in the throat area that help defend against infection by trapping pathogens entering through the mouth or nose.

Endoderm

The deepest layer of cells or tissues in an embryo during initial development stages, which eventually forms the lining of both the digestive and respiratory tracts.

Facial Bones

The bones that structure the human face, including the mandible, maxilla, nasal, zygomatic, and others.

Mesoderm

The middle layer of an embryo from which muscles, bones, and circulatory systems develop.