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Why did Dmitri Mendeleev organize the elements into a periodic table?
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2. Atoms & Elements
Periodic Table: Classifications
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In the modern periodic table, which group contains the noble gases?
A
Group 17
B
Group 18
C
Group 1
D
Group 2
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Recall that the modern periodic table is organized into groups (vertical columns) numbered from 1 to 18.
Understand that noble gases are elements known for their very low chemical reactivity due to having a full valence electron shell.
Identify that the noble gases are located in the last group of the periodic table, which is Group 18.
Note that Group 17 contains the halogens, which are highly reactive nonmetals, not noble gases.
Therefore, the group that contains the noble gases is Group 18.
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