Atomic and Physical Properties of Group 15 Elements

Which of the following option is correct about the electronegativity of the given elements?

$\mathrm{N}, \mathrm{As}, \mathrm{P}, \mathrm{Sb}, \mathrm{Bi}.$

Half filled p orbital is stable due to

Which of these have half filled p orbital?

Half filled p orbital has greater symmetry and exchange energy which makes it very stable.

Give reason why half filled p orbital is stable.

Which of the following is not an allotrope of phosphorous?

Which of the following atom have the highest melting points?

How many of the following trends is(are) $CORRECT$with respect to the properties of hydrides of group $15$ elements?
$i.$ Basic strength:
${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3$
$ii.$ Reducing character:
${\mathrm{NH}}_3<{\mathrm{PH}}_3<{\mathrm{AsH}}_3<{\mathrm{SbH}}_3<{\mathrm{BiH}}_3$
$iii.$ Thermal stability:
${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3$
$iv.$ Boiling point:
${\mathrm{NH}}_3<{\mathrm{PH}}_3<{\mathrm{AsH}}_3<{\mathrm{SbH}}_3<{\mathrm{BiH}}_3$

Identify the most stable oxidation states of the first two elements of group $15$.

Which chalcogen has the most negative electron gain enthalpy?

Bond angle in white phosphorus is

The correct order of boiling point is:

$\mathrm{A}:$ $\mathrm{P}$ can form ${\mathrm{PF}}_5$, but $\mathrm{N}$ cannot form ${\mathrm{NF}}_5$ .

$\mathrm{R}:$ $\mathrm{N}$ is more electronegative than that of fluorine.

The electronic configuration of an element is $1{\mathrm{s}}^2,\mathrm{ }2{\mathrm{s}}^2,\mathrm{ }2{\mathrm{p}}^6,\mathrm{ }3{\mathrm{s}}^2\mathrm{ }3{\mathrm{p}}^3$. What is the atomic number of the element which is just below the above element in the periodic table ?

The correct order of ionic radius is

Which of the following halides is most acidic?

Which element exist as a solid at $25°\mathrm{C}$ and $1 \mathrm{atm}$ pressure among the following?

What is the electronic configuration of $\mathrm{P}$ in ${\mathrm{H}}_3\mathrm{P}{\mathrm{O}}_4$?