Multiple Choice
To which group of the periodic table does iodine belong?
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2. Atoms & Elements
Periodic Table: Group Names
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Which period and group does the element boron belong to on the periodic table?
A
Period 3, Group 13
B
Period 2, Group 13
C
Period 3, Group 14
D
Period 2, Group 15
Verified step by step guidance1
Identify the atomic number of boron, which is 5. The atomic number tells us the number of protons and helps locate the element on the periodic table.
Determine the period by counting the number of electron shells occupied by boron. Since boron has electrons in the first and second shells, it belongs to Period 2.
Determine the group by looking at the number of valence electrons in the outermost shell. Boron has 3 valence electrons, which places it in Group 13 (also known as Group IIIA in older notation).
Combine the period and group information to locate boron on the periodic table: Period 2 and Group 13.
Verify the position by checking a periodic table to confirm that boron is indeed in Period 2, Group 13.
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