Question
Which of the following is a noble gas/element?
This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Ne
Noble Gas Element Identification
Noble gases belong to Group 18 of the periodic table. They are known for their low chemical reactivity due to having a full valence electron shell.
Element Analysis
- $Ca$ represents Calcium, an alkaline earth metal in Group 2.
- $F$ represents Fluorine, a highly reactive halogen in Group 17.
- $N$ represents Nitrogen, a nonmetal in Group 15.
- $Ne$ represents Neon, an element in Group 18, which is a noble gas.
Conclusion
Based on the periodic table groups, Neon ($Ne$) is the only noble gas among the options provided.
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