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=>K2MnF6 + SbF5 KSbF6 +MnF3 +F2 which of the following is the stronger lewis acid? a)K2MnF6 b)SbF5 c)KSbF6 d)MnF3 =>what is the temperature at which alpha & beta sulphur exists simultaneously? a)289k b)369k c)396k d)419k =>what is the number of hydroxyl groups in the phosphorous(phosphonic)acid? a)1 b)2 c)3 d)none STRUCTURE OF THE ACID O P H OH OH =>why does sulphur in vapour state exhibit paramagnetic behaviour? a)since sulphur exists as alpha sulphur b)since sulphur exists as chain polymers called catena-Sn c)since sulphur exists as S2 d)since sulphur exists as S8 AMINO ACIDS ISOELECTRIC POINT There exists some topics which in general read by the student but these are such topics which one should not touch also.Such as: ---------CFT ---------EXTRACTION of some metals and compounds ,be always choosy only preparation is needed no cramming of temp. and pressures. ----------INVENTORS of organomettalic and coordination compounds. 1.metals exhibits two types of linkages: Primary-satisfying ions and have an oxidation state Secondary-satisfying ions as well as neutral groups and have coordination number 2.secondary linkages exhibit different spatial arrangement which is according to the coordination Ligand theory Weak and strong CO > CN- >H2O>O-2>C204-2>OH->F->Cl->S2>I-2 INNER ORBITAL(d2sp3) Strong ligands OUTER ORBITAL(sp3d2) Weak ligands NAME OF THE COMPOUND (with the formulae) COLOUR PREPARATION -------------------PHYSICAL PROPERTIES --------------------------------------------------------- CHEMICAL PROPERTIES ------------------------------------------ MOLECULAR STRUCTURE O P TANDON NCERT And one more book It is it is it is BROCHURE OF IIT-JEE