The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of `CoCl _(3) 4NH _(3) is "_________"` (Round off to the Nearest Integer).

In the complex CoCl_(3).4NH_(3)

A certain orbital has n = 4 and m_(L) = -3 . The number of radial nodes in this orbital is "______________" . ( Round off to the Nearest Integer ) .

The reaction 2A + B_(2) to 2AB is an elementary reaction. For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of 3, the rate of the reaction increases by a factor of _________ . (Round off to the Nearest Integer).

On complete reaction of FeCl_(3) with oxalic acid in aqueous solution containing KOH, resulted in the formation of product A. The secondary valency of Fe in the product A is ________. (Round off to the Nearest Integer).

The escape speed of an electron launched from the surface of a 1cm diameter glass sphere that has been charged to 10 nC is ……. xx 10^(7) m//sec . (Round off in the nearest integer)

The reaction of white phosphorus on boiling with alkali in inert atmosphere resulted in the formation of production 'A'. The reaction of 1 mol of 'A' with excess of AgNO_(3) in aqueous medium gives "____________" mol(s) of Ag. (Round off to the Nearest Integer ).

3 moles of metal complex with formula Co ( en) _(2) Cl _(3) gives 3 moles of silver chloride on treatment with excess of silver nitrate . The secondary valency of Co in the complex is ___________. (Round off to the nearest integer)