Chemical Properties of Group 15 Elements

A tetra-atomic molecule $\left(\mathrm{A}\right)$ on reaction with Nitrogen (I)Oxide produces two substances (B) and $\left(\mathrm{C}\right)$. (B) acts as a dehydrating agent while substance$\left(\mathrm{C}\right)$ is a diatomic gas which shows almost inert behavior. The substances $\left(\mathrm{A}\right),\left(\mathrm{B}\right)$ and$\left(\mathrm{C}\right)$ respectively are_______

The gases liberated when zinc reacts with dilute and conc. ${\mathrm{HNO}}_3$ respectively are

In an organic compound phosphorus is estimated as $\_\_\_$

Which reaction (s) among the following produce Dinitrogen?

$\left(\mathrm{i}\right) {\mathrm{NH}}_4\mathrm{Cl}\left(\mathrm{aq}\right) +{\mathrm{NaNO}}_2\left(\mathrm{aq}\right) \to$

$\left(\mathrm{ii}\right) {\mathrm{NH}}_2{\mathrm{CONH}}_2 + 2{\mathrm{H}}_2\mathrm{O} \to$

$\left(\mathrm{iii}\right) \mathrm{Ba}{\left({\mathrm{N}}_3\right)}_2 \to$

$\left(\mathrm{iv}\right) {\mathrm{NH}}_4\mathrm{Cl} + \mathrm{Ca}{\left(\mathrm{OH}\right)}_2 \to$

The acidic character of the group- $15$ elements in the increasing order is _____

The correct order for decreasing basic strength of the molecules ${\mathrm{PH}}_3,{\mathrm{AsH}}_3,{\mathrm{SbH}}_3$, and ${\mathrm{BiH}}_3$ is:

Ammonia produced is used in making nitro-based explosives including

Nitrogen does not form ${\mathrm{NF}}_5$ because

Give reason:

Bismuth is a strong oxidising agent in the pentavalent state.

Why is the bond angle in ${\mathrm{PH}}_3$ is lesser than that in ${\mathrm{NH}}_3$ molecule?
 

Compare the properties of hydrides of nitrogen and phosphorus.
 

Account for the following :

Phosphorus shows variable oxidation states.

Account for the following :

${\mathrm{BiCl}}_3$ is less covalent than ${\mathrm{PCl}}_3$.
 

Give reason for the difference in the following:

 Stabilities of $+3$ oxidation state of $\mathrm{P}$ and $\mathrm{Bi}$.

Discuss the pattern of variation in the oxidation state of the following $\mathrm{P}$ to $\mathrm{Bi}$.
 

${\mathrm{NH}}_3$ is basic while ${\mathrm{PH}}_3$ is:

Why does ${\mathrm{NCl}}_5$ not exist?

${\mathrm{MX}}_5 (\mathrm{M} = \mathrm{P}, \mathrm{As}, \mathrm{Sb} \mathrm{and} \mathrm{Bi})$ are known but ${\mathrm{MH}}_5$ are not known, why?

Find the incorrect statement: