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
A. Helium
B. Argon
C. Neon
D. Krypton
Answer: Option A
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
Join The Discussion