q2. ans is 8 ... thx govind
Q1. anyone??
dude actually this question has been previously asked by eureka...
the formula of the compound is actually K3[Cr(O2)4]
foe qn 2 see this link
http://targetiit.com/iit-jee-forum/posts/find-y-and-its-strucuture-13957.html