Statement I: Hydrogen reacts faster with halogens than deuterium.Statement II : The activation energy of hydrogen is less than that of deuterium.

Reactivity of X2 with H2& D2H2+X2→2HX ;r1 D2+X2→2DX;r2rate :  r1>r2              Ea:(Ea)1 < (Ea)2  Ea: The minimum energy suplied to the reactants inorder to form the activated complex is called "Ea"In case of D2 reaction the D-D bond energy greater than that of H2 Bond dissociation energy, therefore in order to activate D2 require more energy.