Question
Explain the property of allotropy in Group 16 elements.
✓
Answer
- All the elements of group 16 exhibit allotropy.
- These elements exist in different allotropic modifications.
- Oxygen exists as $O _2$ and ozone $O _3$.
- Sulphur exists as $\alpha$-sulphur, $\beta$-sulphur, γ-sulphur, homocyclic sulphur, plastic sulphur, etc. Rhombic sulphur (α sulphur) and mono-clinic sulphur ($\beta$ sulphur) are the important allotropes. Both are non-metallic in nature.
- Selenium exists in two allotropic forms red (non-metallic) and grey (metallic).
- Tellurium exists in two allotropic forms crystalline form and the amorphous form.
- Po has two forms namely $\alpha$-form and $\beta$-form both being metallic.
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