Question

elements with features of both metals and nonmetals are called _____. answer options: select one of four alkaline earth metals, metalloids, transition metals, rare earth elements

Explanation:

To solve this, we analyze each option:

• "alkaline earth metals" are a group of metals (e.g., Mg, Ca) with typical metal properties, not both metal and non - metal.
• "metalloids" are elements that have properties intermediate between metals and non - metals (e.g., Si, Ge), matching the description.
• "transition metals" are metals with specific electron - configuration - related properties, all metallic.
• "rare earth elements" are a group of metals, mainly metallic in nature.

Answer:

B. metalloids