Which of the following properties-of white phosphorus are...

Which of the following properties-of white phosphorus are shared by red phosphorus?
(a) It phosphorescences in air
(b) It burns when heated in air E
(c) It dissolves in $\mathrm{CS}_{2}$
(d) It reacts with $\mathrm{NaOH}$ to give $\mathrm{PH}_{3}$

Key Concepts

Reactivity with Alkali to Form Phosphine

This concept pertains to the chemical reaction where phosphorus compounds react with bases, such as sodium hydroxide, to yield phosphine (PH?). It is important for understanding the chemical reactivity and the conditions under which different allotropes of phosphorus can engage in nucleophilic substitution or redox reactions, highlighting differences in their chemical stability and reaction mechanisms.

Combustion Reactions

This concept involves the ability of a substance to undergo exothermic oxidation, often resulting in combustion when exposed to air and heat. It is crucial for understanding the reactivity of phosphorus allotropes, particularly the tendency of white phosphorus to ignite, and comparing if and how this behavior is reflected in red phosphorus.

Solubility in Organic Solvents

Solubility in a solvent such as carbon disulfide (CS?) highlights the interaction between a substance’s chemical structure and nonpolar solvents. This concept is significant in evaluating whether the solubility behaviors of different phosphorus allotropes are similar, indicating comparable intermolecular forces and molecular stability.

Phosphorus Allotropy

This concept deals with the existence of phosphorus in different structural forms, primarily white and red phosphorus, which exhibit distinct physical and chemical properties due to differences in their molecular arrangements. Understanding allotropy helps explain why properties such as reactivity, stability, and other behaviors differ between the forms.

Phosphorescence

Phosphorescence refers to the phenomenon where a substance absorbs energy and then slowly re-emits it as light. In the context of phosphorus allotropes, the concept is important for understanding why white phosphorus shows luminescence, a property linked to its electronic structure and potential energy states, and whether this property carries over to other forms like red phosphorus.

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