Which of the following inert gas has only two electrons in its outer most cell?
A. Helium
B. Argon
C. Neon
D. Krypton
Answer: Option A
Related Questions on Non Metal and Its Compounds
Red phosphorus is less reactive than yellow phosphorus because
A. it is red in colour
B. it is highly polymerised
C. it is insoluble in C2H5OH
D. it is hard

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