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Which term is used to describe the vertical columns on the periodic table?
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2. Atoms & Elements
Periodic Table: Group Names
Scelta multipla
Which of the following elements is a semimetal found in group 8A of the periodic table?
A
Radon
B
Oganesson
C
Xenon
D
None; there are no semimetals in group 8A.
Guida verificata passo dopo passo1
Identify the group 8A elements, also known as the noble gases, which include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and Oganesson (Og).
Understand that semimetals (metalloids) have properties intermediate between metals and nonmetals and are typically found along the stair-step line between metals and nonmetals in the periodic table.
Recognize that group 8A elements are all nonmetals with very low chemical reactivity, and they do not exhibit the characteristic properties of semimetals.
Review the specific elements listed: Radon (Rn), Oganesson (Og), and Xenon (Xe), all of which are noble gases and nonmetals, not semimetals.
Conclude that there are no semimetals in group 8A, so none of the given elements are semimetals.
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