Which series of inner transitional metals covers atomic numbers from 58 to 71?

Which series of inner transitional metals covers atomic numbers from 58 to 71?

• A. Actinide series
• B. Lanthanide series
• C. Noble gas series
• D. Metalloid series

Answer: (B)

The correct series of inner transitional metals that covers atomic numbers from 58 to 71 is the lanthanide series. This series consists of 15 elements starting from cerium (atomic number 58) to lutetium (atomic number 71). The lanthanides are known for their similar properties, including their reactivity and the formation of complex ions. These elements are often found in minerals and are known for their applications in various technologies, such as in the production of strong permanent magnets, phosphors for lighting, and as catalysts in petroleum refining. In contrast, the actinide series includes elements that have atomic numbers from 89 to 103, such as uranium and plutonium. The noble gas series, which comprises elements like helium and neon, is unrelated to the transition metals and does not include any of the inner transition metals. The metalloid series refers to a group of elements with properties intermediate between metals and nonmetals, which also does not encompass the lanthanides.

The correct series of inner transitional metals that covers atomic numbers from 58 to 71 is the lanthanide series. This series consists of 15 elements starting from cerium (atomic number 58) to lutetium (atomic number 71). The lanthanides are known for their similar properties, including their reactivity and the formation of complex ions.

These elements are often found in minerals and are known for their applications in various technologies, such as in the production of strong permanent magnets, phosphors for lighting, and as catalysts in petroleum refining.

In contrast, the actinide series includes elements that have atomic numbers from 89 to 103, such as uranium and plutonium. The noble gas series, which comprises elements like helium and neon, is unrelated to the transition metals and does not include any of the inner transition metals. The metalloid series refers to a group of elements with properties intermediate between metals and nonmetals, which also does not encompass the lanthanides.