MEDIUMMCQ SINGLEJEE Advanced ChemistryInorganic Chemistryp -Block Elements (group 15-18)Previous Year Questions

Which among the following group 16 elements exists in more than two allotropic states? (JCECE 2014)

A.Polonium

B.Tellurium

C.Selenium✓ Correct

D.Oxygen

Explanation

Element Allotropes (a) Polonium α- and β-polonium (b) Tellurium None (c) Selenium Trigonal, rhombohedral, three deep red monoclinic forms (α, β and γ-amorphous red, black vitreous selenium). (d) Oxygen Dioxygen and ozone

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