What is the transition temperature of alpha- and beta-sulfur?

What colour does the compound dinitrogen trioxide appear in its liquid state?

What is the allotrope of phosphorus in which P-atom completes its octet?

Which of the following compounds react with water to give phosphine?

From which type of phosphorus is alpha -black phosphorus formed?

Which group 16 element is the most electronegative?

What is the name of the process of extracting sulfur on commercial scale?

To which group does chlorine element belong?