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Q149. What is the atomic number of the noble gas located directly below Radon (Rn) in the periodic table?

Chemistry — NUST Mock By Dogers 4 — Question 149 of 200

A. 118
B. 120
C. 124
D. 90

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What is the atomic number of the noble gas located dire... | Chemistry MCQ #149 | Examora | Examora