Statement(I) : Catenation in Nitrogen is lesser than in PhosphorousStatement(II) : N-N  single bond is weaker than  P-P single bond

N..-N.. single bond is weak because the lonepairs are closer to each other due to small size of Nitrogen atomsP..-P.. single bond is relatively stronger due to the optimum size of 'P' atoms.∴ catenation property of  Nitrogen is lesser than in Phosphorous