On the periodic table, where are most elements that are essential for the human body typically located?

• A. Mostly in the transition metals block in the center of the table
• B. Predominantly in the lanthanide and actinide series at the bottom of the table
• C. Mainly among the noble gases in Group 18
• D. Primarily among the nonmetals and metalloids on the right side of the table

Answer: (D)

Verified step by step guidance

1. Understand the layout of the periodic table: it is divided into blocks such as s-block, p-block, d-block (transition metals), and f-block (lanthanides and actinides).
2. Recall that essential elements for the human body include elements like carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulfur (S), and others.
3. Recognize that these essential elements are mostly nonmetals and metalloids, which are located on the right side of the periodic table, primarily in the p-block.
4. Note that transition metals (d-block) and lanthanides/actinides (f-block) contain some trace elements important for the body but are not where most essential elements are found.
5. Conclude that the majority of essential elements for the human body are primarily among the nonmetals and metalloids on the right side of the periodic table.