What do the yellow-colored blocks in the periodic table indicate?
A. noble gases
B. alkali metals
C. halogens
D. alkaline earth metals
Answer (2)
The problem asks to identify the group represented by the yellow blocks in the periodic table.
The yellow blocks contain the elements He, Ne, Ar, Kr, Xe, and Rn.
These elements are known as noble gases, characterized by their stable electron configurations.
Therefore, the yellow-colored blocks indicate the noble gases: noble gases .
Explanation
Understanding the Question The question asks us to identify what the yellow-colored blocks in the given periodic table represent. The options are noble gases, alkali metals, halogens, and alkaline metals.
Identifying the Yellow Blocks Let's examine the periodic table provided. The yellow-colored blocks are located in the rightmost column of the main table. These elements are He, Ne, Ar, Kr, Xe, and Rn.
Considering the Options Now, let's consider the options:
Noble gases: These are located in the rightmost column of the periodic table and are known for their stable electron configurations.
Alkali metals: These are located in the leftmost column of the periodic table (except for hydrogen).
Halogens: These are located one column to the left of the noble gases.
Alkaline earth metals: These are located in the second column from the left.
Determining the Answer Comparing the yellow-colored elements (He, Ne, Ar, Kr, Xe, Rn) with the descriptions of the options, we can see that they match the description of noble gases .
Final Answer Therefore, the yellow-colored blocks indicate the noble gases.
Examples
The periodic table is a fundamental tool in chemistry. Identifying groups like noble gases helps us understand the properties and reactivity of elements. For example, noble gases are used in lighting, welding, and as coolants because of their inert nature. Knowing where these elements are located on the periodic table allows chemists and other scientists to quickly identify elements with similar properties, which is crucial in designing experiments and creating new materials.
The yellow-colored blocks in the periodic table indicate noble gases, which include Helium, Neon, Argon, Krypton, Xenon, and Radon. These elements are placed in Group 18 and are characterized by their stability and lack of reactivity due to full outer electron shells.
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