Multiple Choice
How are elements arranged into chemical families on the periodic table?
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Periodic Table: Group Names
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Which of the following elements is a Group 5A (Group 15) element on the periodic table?
A
Rhenium
B
Arsenic
C
Actinium
Verified step by step guidance1
Understand that Group 5A (also known as Group 15) elements on the periodic table are part of the nitrogen group, which includes elements with five valence electrons in their outermost p-orbital.
Recall the common elements in Group 15: Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb), and Bismuth (Bi).
Identify the given elements: Rhenium (Re) is a transition metal in Group 7, Arsenic (As) is a metalloid in Group 15, and Actinium (Ac) is an actinide, not part of Group 15.
Match the element to its group based on its position in the periodic table; since Arsenic is in Group 15, it fits the criteria of a Group 5A element.
Conclude that Arsenic is the correct answer because it belongs to Group 15, while Rhenium and Actinium do not.
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