Question

(co) and nickel (ni) are metals, sulfur (s) is a nonmetal, and antimony (sb) is a metalloid. these four elements have an x through them. there are two untested elements outlined in bold. “nb” is niobium. “at” is astatine. 4. what category would you place these two elements in after testing them with each of the tools used in the lab? . use evidence from your lab results to support your answer.

Explanation:

Niobium (Nb) is a metal as it typically shows metallic properties like high electrical and thermal conductivity, malleability and ductility which are usually detected in lab tests. Astatine (At) is a metalloid. It has properties intermediate between metals and non - metals. For example, it has some metallic luster but also non - metallic chemical reactivity in some cases as might be observed in lab tests.

Answer:

Niobium (Nb) is a metal. Astatine (At) is a metalloid.