How many of the following species have been correctly matched with their property (Give your answer by multiplying with two).
(i) Cl2O : bond angle greater than 10928'.
(ii) O3- : Paramganetic.\
(iii) H2S2O8 : Contains a peroxy linkage.
(iv) XeF4 : d x2 - y2orbitals involved in hybridisation of central atom.
(v) N2H4 : NN bond length greater than expected.
(vi) P3O10 5- : 3 different types of P- O bond length are observed.