Multiple Choice
Which of the following is a pure substance?
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1. Intro to General Chemistry
Classification of Matter
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Which group is incorrectly paired with its description?
A
Group 2: Alkaline Earth Metals
B
Group 1: Alkali Metals
C
Group 18: Halogens
D
Group 17: Noble Gases
Verified step by step guidance1
Begin by reviewing the periodic table and identifying the groups mentioned in the problem: Group 1, Group 2, Group 17, and Group 18.
Understand the characteristics of each group: Group 1 contains Alkali Metals, Group 2 contains Alkaline Earth Metals, Group 17 contains Halogens, and Group 18 contains Noble Gases.
Compare the descriptions provided in the problem with the actual characteristics of each group. Note that Group 18 is described as Halogens, which is incorrect.
Recognize that Halogens are actually found in Group 17, while Noble Gases are found in Group 18.
Conclude that the incorrect pairing in the problem is Group 18 being described as Halogens, when it should be described as Noble Gases.
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