Rhombic sulphur changes into monoclinic sulphur when heated above __ while monoclinic sulphur changes into rhombic when cooled below __ respectively.
Monoclinic sulphur (β-sulphur or prismatic sulphur) is:
2HCl(aq) + FeS(s) →
Sulphur is a __ at room temperature.
The electronic configuration of sulphur is:
