1.In case of nitrogen, NCl3NCl_3NCl3 is possible but not NCl5NCl_5NCl5 while in case of phosphorus, PCl3PCl_3PCl3 as well as PCl5PCl_5PCl5 are possible. It is due toa.availability of vacant ddd orbitals in PPP but not in NNNb.lower electronegativity of PPP than NNNc.lower tendency of H-bond formation in PPP than NNNd.occurrence of PPP in solid while NNN in gaseous state at room temperatureLogin to continueOnly logged in users canattempt or see the solution.