Preparation of Compounds of Phosphorus

State which of the following statements are true:

(i) Nitrogen is more reactive than phosphorus  $\left({\mathrm{P}}_4\right)$

(ii) All the bonds in  ${\mathrm{PCl}}_5$  are of equal length.

In solid ${\mathrm{PI}}_5$, how many $\mathrm{P}-\mathrm{I}$ bonds are present in the cation?

The hybridisation of phosphorus atom in phosphorus trichloride is-

The order of the oxidation state of the phosphorus atom in $H_{3}P{O}_2, H_{3}P{O}_4, H_{3}P{O}_3$ and $H_4{P}_2{O}_6$ is

_____ is generally prepared in the laboratory by heating white phosphorus with an aqueous solution of caustic potash.

The number of $\mathrm{P}-\mathrm{O}-\mathrm{P}$ bonds in the structure of phosphorous pentaoxide and phosphorous trioxide are respectively.($6,6/6,10$)

${\mathrm{PCl}}_5$ is ionic in solid state in which cation is tetrahedral and anion is _____.

Write the balanced reaction for the preparation of the following acid. Pyrophosphoric acid

Explain the following:

Water is added to calcium phosphide.
 

In what way can it be proved that ${\mathrm{PH}}_3$ is basic in nature?
 

Phosphine is prepared in an inert atmosphere of ${\mathrm{CO}}_2$ or ${\mathrm{H}}_2$. Give reason.

The average oxidation number of oxygen in ${\mathrm{H}}_4{\mathrm{P}}_2{\mathrm{O}}_8$ is

 

$\underset{(1 \mathrm{mole})}{\mathrm{A}}\stackrel{+4{\mathrm{H}}_2\mathrm{O}}{⟶}\underset{(2 \mathrm{mole})}{\mathrm{Diphosphoric} \mathrm{acid}}\stackrel{+2{\mathrm{H}}_2\mathrm{O}}{⟶}\underset{(4 \mathrm{mole})}{\mathrm{B}}$

Find sum of number of $\mathrm{P}-\mathrm{O}-\mathrm{P}$ linkage in compound $\mathrm{A}$ and basicity of compound $\mathrm{B}$.

${\mathrm{PCl}}_5\stackrel{\mathrm{\Delta }}{⟶}{\mathrm{PCl}}_3+{\mathrm{Cl}}_2$ Select correct statement for following conversion.

In solid state ${\mathrm{PCl}}_5$ is a .........

The most powerful reducing agent is:

Which of the following salt is not possible :

How many $\mathrm{P}-\mathrm{O}-\mathrm{P}$ linkage (s) are present in ${\mathrm{P}}_4{\mathrm{O}}_{12}^{-4}$?

Correct for ${\mathrm{H}}_3{\mathrm{PO}}_4$ is :

The phosphorous in $+3$ oxidation state is: