Multiple Choice
State the element symbol found in the 6th Period and Group 7A.
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4. Atoms and Elements
Periodic Table: Representative Elements & Transition Metals
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Which description best defines a main-group (representative) element on the periodic table?
A
An element in Groups 1, 2, and 13–18 (the s- and p-block elements)
B
An element in Groups 3–12 (the d-block transition metals)
C
An element in the f-block (lanthanides and actinides) only
D
Any element that has a partially filled d subshell in its ground-state electron configuration
Verified step by step guidance1
Understand that the periodic table is divided into blocks based on the electron configuration of the elements: s-block, p-block, d-block, and f-block.
Recall that main-group (or representative) elements are those found in the s-block and p-block of the periodic table, which correspond to Groups 1, 2, and 13 through 18.
Recognize that the d-block elements are the transition metals, located in Groups 3 through 12, and are not considered main-group elements.
Know that the f-block elements include the lanthanides and actinides, which are separate from the main-group elements.
Conclude that the best description of a main-group element is an element in Groups 1, 2, and 13–18, which are the s- and p-block elements.
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