Answer :
Final answer:
The category of elements that represents almost three-fourths of the periodic table is metals, due to their extensive presence. Metals are good conductors and typically solid at room temperature. This organization into metals, nonmetals, and metalloids reflects the structure of the periodic table.
Explanation:
Understanding the Periodic Table
In the periodic table, elements are organized based on their atomic number, electron configuration, and recurring chemical properties. This organization leads to distinct categories such as metals, nonmetals, and metalloids.
Categories of Elements
Among the categories listed in your question, metals are the predominant group, making up almost three-fourths of the periodic table. Here’s a brief overview of each category:
- Metals: Located on the left side and middle of the periodic table, they are typically solid at room temperature (except for mercury) and are good conductors of heat and electricity.
- Nonmetals: Found on the right side of the periodic table, they are varied in physical state (gases, liquids, solids) and are poor conductors.
- Metalloids: Positioned between metals and nonmetals, metalloids exhibit properties of both categories.
To summarize, the correct answer to your question about which category represents almost three-fourths of the periodic table is metals (option c), due to their vast presence in the periodic table compared to other types of elements.
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