The elements with atomic numbers 10, 18, 36, 54 are-
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A.
Light metals
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B.
Inert gases
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C.
Rare earths
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D.
Halogens
Correct Answer:
B. Inert gases
Explanation:
The elements with atomic numbers 10 (Neon), 18 (Argon), 36 (Krypton), and 54 (Xenon) are classified as inert gases, also known as noble gases. These elements are located in Group 18 of the periodic table and are characterized by having a complete valence electron shell. This full outer orbital makes them exceptionally stable and generally non-reactive under standard conditions, as they do not need to gain, lose, or share electrons to achieve stability. While they are often called noble gases to reflect their low reactivity, the term inert gases specifically describes their chemical inactivity compared to other element groups like halogens or metals.
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