Question

question 6
elements on the stair step line are unique because
they have properties of both metals and nonmetals.
there are more metalloids than any other type of element on the table.
they are the most researched of any elements on the table.
they are more expensive and rare than other elements on the table.

Explanation:

Elements on the stair - step line of the periodic table are metalloids. Metalloids have properties intermediate between metals and non - metals. There are not more metalloids than other element types, they are not the most researched, and they are not necessarily more expensive and rare compared to all other elements.

Answer:

They have properties of both metals and nonmetals.