Multiple Choice
Which of the following elements is classified as a noble gas?
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Periodic Table: Group Names
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Which of the following elements is a member of the halogen family and is located in period 3 of the periodic table?
A
I
B
Br
C
Cl
D
F
Verified step by step guidance1
Recall that the halogen family consists of elements in Group 17 of the periodic table. These elements include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Understand that periods in the periodic table are the horizontal rows, numbered from 1 to 7. Period 3 corresponds to the third row from the top.
Identify the elements given: I (iodine), Br (bromine), Cl (chlorine), and F (fluorine). Determine the period number for each element by locating them in the periodic table.
Check which of these elements belong to Group 17 (halogens) and are located specifically in period 3. This means the element must be in the third row and the halogen column.
Conclude that chlorine (Cl) is the halogen element located in period 3, as it is in Group 17 and the third period of the periodic table.
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