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The elements to the left of the stairs in the periodic table are called metals. However, within metals you have different families as it is indicated in the periodic table in the image below: Was this helpful?
Best Answer: Whoever said that the elements below the staircase are known as halogens is clearly out of their mind--the halogens are to the right of it, without ever touching the staircase. Every element--except for aluminum (Al)--that sits on or under (touches) the staircase is known as a metalloid. To the left are the transition metals, and to the right are the halogens, then the noble gases. In my experience with chemistry, I haven't come across any formal name; any chemist would clearly understand what the staircase in the periodic table is, where it's at, and that almost all the elements on it are metalloids.