Chemical Properties of Group 15 Elements

Ammonia has the highest enthalpy of vaporization due to _____.(Vander waal's force/hydrogen bonding)

The element which do not show allotropy is _____(Nitrogen/Bismuth).

Bond dissociation enthalpy of $\mathrm{E}—\mathrm{H} (\mathrm{E} = \mathrm{element})$ bonds is given below. Which of the compounds will act as strongest reducing agent?

(Note : Fill the blanks by writing the chemical formulas in straightforward manner without using subscript. For example, the chemical formula of methane should be filled in the blank as $\mathrm{CH}4$ and not as ${\mathrm{CH}}_4$)

Anhydride of nitrous acid and nitric acid are

The product obtained as a result of a reaction of nitrogen with $\mathrm{C}\mathrm{a}{\mathrm{C}}_2$ is:

Which of the following is/are correct reason for the following statement: "${\mathrm{PH}}_3$ has low boiling point than ${\mathrm{NH}}_3$".

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

Account for the following :

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

${\mathrm{NH}}_3$ 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?

Which of the following hydrides has the largest bond angle?
 

What is the oxidation state that is exhibited by group 15 elements when they react with metals?

Which of the following statements is wrong?

Which of the following elements does not show allotropy?

Bond dissociation enthalpy of $\mathrm{E}—\mathrm{H} (\mathrm{E} = \mathrm{element})$ bonds is given below. Which of the compounds will act as strongest reducing agent?

The oxidation state of central atom in the anion of compound ${\mathrm{NaH}}_2{\mathrm{PO}}_2$ will be ______.

Maximum covalency of nitrogen is 

${\mathrm{PCl}}_5$ exists but ${\mathrm{NCl}}_5$ does not due to