Which elements have 7 valence electrons in their outermost shells?
A. halogen
B. transitive element
C. inert gases
D. differential transitive elements
Answer: Option A
A. halogen
B. transitive element
C. inert gases
D. differential transitive elements
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