Question

atomic number of elements P, Q, R and S are 11,15,17 and 12 respectively which of them are reactive non metal ​

Answer 1

Answer:

Q and R

because Q is phosphorus and R is chlorine which are non-metals.

Answer 2

Answer:

the most reactive non metal will be element Q-15  phosphorous because it need 3 valence electrons to become stable. whereas R-17 chlorine needs  1 valence electron to become stable, so Q and R will be the reactive non metals

Explanation:

PLEASE MARK AS BRAINLIEST !!!!!