Answer :
Final answer:
c) are metalloids. The heavy zigzag line on the periodic table mainly represents metalloids, which exhibit properties in-between metals and nonmetals. Examples include silicon and germanium among others. Metalloids do not conduct electricity as thoroughly as metals, making them key in semiconductor technology.
Explanation:
The elements shown on the heavy zigzag line in the periodic table are mostly metalloids. These are elements that have properties in between, or that are a mixture of, metals and nonmetals. Examples of these include boron, silicon, germanium, arsenic, antimony, and tellurium.
Metalloids, also sometimes called semimetals, exhibit unique characteristics. Despite appearing metallic, they do not conduct electricity as efficiently as elements classified as metals. This is because their electrons are more tightly bound to their nuclei compared to those of metallic conductors. Hence, they are utilized extensively as semiconductors in the technology sector.
Their chemical behavior is also intermediate to that of metals and nonmetals, hence the name metalloids. For instance, just like nonmetals, pure metalloids form covalent crystals. However, similar to metals, they usually do not form monatomic anions. This unique behavior is largely attributable to their intermediate electronegativity values.
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