Statement I : C - C bond energy is less than that of H - H bond energy, but carbon exhibit catenation, where as Hydrogen does notStatement II : Hydrogen is monovalent where as carbon is tetra valent.

In order to exhibit catenation property, two condition are required1) Bond dissiociation energy should be high and2) The atom should be divalent (or) tetravalentH - H bond energy is more than that of carbon but "H" is monovalent and hence it can't exhibit catenation