o/n 2007
4 isnt it D group 3
5
9
37
Q4) The greatest difference in I.E is between the 2nd and 3rd I.Es. That means it belongs to group 2
Q5) A polar molecule. Forms dipole, and can form hydrogen bonds with HCHO
Q9) The metal has to form a salt with sulphate ion. SO4 has a ox state of -2....so that of metal has to be +2 (only then will it form a stable salt compound)
Q37) I'll try get the mechanism...