p-Block Element...

Which of the following is the correct statement?

Which of the following statements regarding the study of oxides of nitrogen is/are correct?

(i) Except N₂O₅, all oxides of nitrogenare endothermic as a large amount of energy is required to dissociate the stable molecules of oxygen and nitrogen.
(ii) Due to small electronegativity difference, N-O bond can be easily broken. Therefore, oxides of nitrogen are good reducing agents.
(iii) N₂O₃ is stable at only higher temperature.
(iv) All oxides of nitrogen are acidic in nature, except N₂O and NO.

The most stable allotropic form of phosphorus, which has graphite like structure and is good conductor of electricity, is

Statement (I) - The order of densities of the various allotropes of phosphorous is: Black phosphorous > red phosphorous > white phosphorous.
Statement (II) - The density of various allotropes of phosphorous depends upon tendency of polymerization.

Which of the following options is correct?

The expected products and the nature of the reaction when phosphine gas is mixed with Cl₂ gas respectively are