Question

Explain the property of allotropy in Group 16 elements.

Answer 1

• All the elements of group 16 exhibit allotropy. 
• These elements exist in different allotropic modifications. 
• Oxygen exists as O₂ and ozone O₃. 
• Sulphur exists as α-sulphur, β-sulphur, γ-sulphur, homocyclic sulphur, plastic sulphur, etc. Rhombic sulphur (α sulphur) and mono-clinic sulphur (β sulphur) are the important allotropes. Both are non-metallic in nature. 
• Selenium exists in two allotropic forms red (nonmetallic) and grey (metallic). 
• Tellurium exists in two allotropic forms crystalline form and the amorphous form.
• Po has two forms namely α-form and β-form both being metallic.