Question 20 (5 points)
Elements that lie along the stair-step line of the periodic table are
liquids
metals
metalloids
radioactive

Respuesta :

Hello There!

Elements that lie along the stair-step line of the periodic table are "metalloids"

Metalloids are elements are basically intermediate between metals and non metals.

Silicon and Boron are examples of metalloids.  

Answer:

Metalloids  are the elements that lie along the stair step