Question

Which is the most thermodynamically stable allotropic form of phosphorus?

Solution

Correct option is

Black

Black phosphorus is highest thermodynamic stable form in red, black, white and yellow allotropic forms of phosphorus because its ignition temperature is highest. Hence it is inert and has a layer structure.

SIMILAR QUESTIONS

Q1

The number S – S bonds in sulphur trioxide trimer, (S3O9) is: 

Q2

Which acid will you use to dissolve lead (II) oxide?

Q3

Sulphur dioxide bleaches colouring matter by

Q4

Which of the following is not hydrolysed?

Q5

When Sn is treated with conc. HNO3