Multiple Choice
Which of the following elements is found in the noble gas group (Group 18) of the periodic table?
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Periodic Table: Group Names
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Which element is located in Group 1B and Period 4 of the periodic table?
A
Cu (Copper)
B
Ag (Silver)
C
Au (Gold)
D
Na (Sodium)
Verified step by step guidance1
Understand the layout of the periodic table: Groups are the vertical columns numbered from 1 to 18, and Periods are the horizontal rows numbered from 1 to 7.
Identify Group 1B: In older IUPAC notation, Group 1B corresponds to Group 11 in the modern numbering system, which contains the elements Cu (Copper), Ag (Silver), and Au (Gold).
Identify Period 4: This is the fourth horizontal row of the periodic table. Elements in Period 4 have electrons filling the 4th energy level.
Locate the element that is both in Group 1B (Group 11) and Period 4: Among Cu, Ag, and Au, Copper (Cu) is the element in Period 4, while Silver (Ag) is in Period 5 and Gold (Au) is in Period 6.
Confirm that Sodium (Na) is not in Group 1B but in Group 1 (alkali metals) and Period 3, so it is not the correct answer.
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