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Multiple Choice
Which of the following elements is classified as a noble gas?
A
Neon (Ne)
B
Sodium (Na)
C
Oxygen (O)
D
Chlorine (Cl)
Verified step by step guidance
1
Recall that noble gases are elements found in Group 18 of the periodic table, known for their full valence electron shells and chemical inertness.
Identify the position of each element in the periodic table: Sodium (Na) is in Group 1, Oxygen (O) is in Group 16, Chlorine (Cl) is in Group 17, and Neon (Ne) is in Group 18.
Understand that elements in Group 18, such as Neon (Ne), have complete outer electron shells, making them stable and unreactive under normal conditions.
Compare the given elements to the characteristics of noble gases and recognize that Neon (Ne) fits the criteria of a noble gas.
Conclude that Neon (Ne) is the element classified as a noble gas among the options provided.