26 Aug 2011 from: Chemistryvanderwaal radius is- twice of bond length, half of bond length, almost equal to bond length, distance between nucleus of non bonded atoms?
26 Aug 2011 from: Chemistryscreening effect is not observed in- H, He+, Li+2,all cases?
26 Aug 2011 from: Chemistrywhich of the elements whose atomic number are given below cannot be accomodated in the present ste up of long form of periodic table-120,124,100,118?
26 Aug 2011 from: Chemistryan element recently discovered is Uuq/what will the formula of its most stable oxide?
25 Aug 2011 from: Physicsshare knowledge... ask questions ... open to all ....an educational social networking website... www.mytestbuddy.com