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Which of the following are the elements of group 18?
AAlkaline earth metals
BHalogens
CAlkali metals
DNoble gases
Answer & Solution
Correct answer: D. Noble gases
1. Group 18 is the last column of the periodic table.
2. These elements have completely filled outer shells and are chemically inert.
3. They are known as the noble gases.
_Source: RRB Group D CEN-02/2018 PYQ, Q.3._