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Multiple Choice
Which of the following elements is a main-group (representative) element?
A
Ag
B
Cu
C
Fe
D
Mg
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1
Understand that main-group (representative) elements are found in the s- and p-blocks of the periodic table, which correspond to groups 1, 2, and 13 through 18.
Identify the given elements and their positions in the periodic table: Ag (Silver), Cu (Copper), Fe (Iron), and Mg (Magnesium).
Recognize that Ag, Cu, and Fe are transition metals located in the d-block, which are not considered main-group elements.
Note that Mg is located in group 2 (alkaline earth metals) of the s-block, making it a main-group element.
Conclude that among the options, Mg is the only main-group (representative) element.