Question

For molecular forms of the given elememnts P, S, Cl, Ar which has highest melting and boiling point​

Answer 1

Answer:

Chlorine, Cl2, is a much smaller molecule with comparatively weak van der Waals attractions, and so chlorine will have a lower melting and boiling point than sulphur or phosphorus. ... The scope for van der Waals attractions between these is very limited and so the melting and boiling points of argon are lower again

Explanation:

Answer 2

Answe

Elements  Type of element  Type of structure      Description

Na, Mg, Al  metal            metallic    mp and bp increase from Na to Al

Si                metalloid       giant covalent      mp greater than Albp between              

                                                                                       Mg and AL  

P, S, Cl, Ar  non-metal  simple molecular      (Ar is monatomic) mp and bp decrease in the order:

S > P > Cl > Ar