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Elements of Groups 16, 17 and 18 — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElements of Groups 16, 17 and 181 Mark
MCQ
Which among the following group 16 elements exists in more than two allotropic states?
✓

Answer

Correct option: C.
(c):
ElementAllotropic forms 
Pollonium$\alpha$ - and $\beta$-forms
TelluriumCrystalline and amorphous
OxygenDinuclear oxygen, $\mathrm{O}_2$ and trinuclear oxygen, $\mathrm{O}_3$ (ozone)
SeleniumRed monoclinic, grey hexagonal metallic, amorphous black

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