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.

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

${\mathrm{PH}}_3$ can be obtained by:

State the hybridisation of the central atom and draw the structure of ${\mathrm{PCl}}_3$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$.

What is the formula of phosphine?
 

For next two question please follow the same

Phosphorus forms a number of oxoacids which differ in their structures and oxidation state of phosphorus. All the acids contain phosphorus atom/atoms linked tetrahedrally to four other atoms or groups. Each of them has at least one P = O or $\text{P} \to \text{O}$ unit and one P - OH unit. The -OH group is ionisable but H atom linked directly to P is non-ionisable. Structures of all the  acids are considered to be derived either from phosphorus acid or phosphoric acid.

Which one is mono-basic acid?

The product formed in the reaction of ${\mathrm{SOCl}}_2$ with white phosphorus is

The statement that is not correct is

Which type of hybridization occurs in ${\mathrm{PCl}}_3$ ?

How many lone pairs of electrons are present in the central atom in the phosphorus trichloride structure ?