Which element is a noble gas?
uranium, U
oxygen, 0
cobalt, Co
neon, Ne
Answer (2)
The problem requires identifying a noble gas from a list of elements.
Noble gases are in Group 18 of the periodic table.
Neon (Ne) is in Group 18.
Therefore, neon is the noble gas: N e .
Explanation
Identifying the Problem The question asks us to identify which of the given elements is a noble gas. We are given a periodic table and a list of elements: uranium (U), oxygen (O), cobalt (Co), and neon (Ne).
Understanding Noble Gases Noble gases are located in Group 18 (also known as Group VIIIA) of the periodic table. They are known for their stable electron configurations, which make them relatively inert.
Locating the Element Looking at the provided list of elements, we need to determine which one is a noble gas. From the periodic table, we can see that Neon (Ne) is located in Group 18.
Final Answer Therefore, neon is the noble gas among the given options.
Examples
Noble gases are used in lighting, such as neon signs, because they emit light when an electric current passes through them. Helium is used in balloons and blimps because it is lighter than air and non-flammable. Argon is used in welding to protect the metal from oxidation. Understanding the properties and uses of noble gases is important in various fields, including chemistry, physics, and engineering.
The noble gas from the list provided is Neon (Ne), which is found in Group 18 of the periodic table. The other options—Uranium, Oxygen, and Cobalt—are not noble gases. Noble gases are characterized by their full valence electron shells, making them non-reactive.
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