Allotropes of Phosphorus

Concentrated ${\mathrm{HNO}}_3$ oxidise white phosphorus into which substance?

Which of the following allotrope of phosphorus has a tetrahedral discrete unit?

Which of the following elements can be involved in $\mathrm{p\pi }–\mathrm{d\pi }$ bonding?

The $\mathrm{p}-\mathrm{p}-\mathrm{p}$ angle in white phosphorous is:

Least reactive allotropic form of phosphorus is:

The percentage of p-character in the orbitals forming P – P bonds in ${\mathrm{P}}_4$ is

A translucent white waxy solid 'A' reacts with excess of chlorine to give a yellowish white powder 'B'. 'B' reacts with organic compounds containing $-\mathrm{O}\mathrm{H}$ group converting them into chloro derivatives. 'B' on hydrolysis gives 'C' and is finally converted to phosphoric acid. 'A', 'B' and 'C' are

The elemental phosphorus is made from rock phosphate, $\mathrm{C}{\mathrm{a}}_3(\mathrm{P}{\mathrm{O}}_4{)}_2$ by making use of which one of the following reactions?

The reaction of $P_4$ with $X$ leads selectively to $P_4{O}_6$ . The $X$ is

Which among the following phosphorus is most reactive?

Wrong statement regarding white phosphorus $\left({\text{P}}_4\right)$ is:

White phosphorus on reaction with lime water gives calcium salt of an acid $X$, along with a gas $Y$. Which of the following statements is correct ?

A tetra-atomic molecule X on reaction with nitrogen oxide (Oxidation State of nitrogen = 1) produces two substances, Y and Z. Y is a dehydrating agent, while compound Z is a diatomic gas which shows almost inert gas behaviour. The substances X, Y and Z are

There are three main well known allotropes of phosphorous in which one form is interconvertable to other as

           $\left[\text{X}\right]\underset{\underset{\underset{\text{atmosphere}}{\text{Inert}}}{\text{573 K}}}{\overset{\text{Δ}}{\to }}\left[\text{Y}\right]\underset{\text{High pressure}}{\overset{\text{Δ}}{\to }}\left[\text{Z}\right]$

[X], [Y] and [Z] represent the

${\text{P}}_4+\text{NaOH}+{\text{H}}_2\text{O}⟶{\text{NaH}}_2{\text{PO}}_2+{\text{PH}}_3$. It is

The products formed on heating phosphorus acid (H₃PO₃) may be

White phosphorus (P₄) has

Which of the following allotropes of phosphorus are thermodynamically least and most stable?