The P-Block Elements - Class 12 Medical Chemistry - Extra Questions

Sulphur when warmed with nonmetal in the absence of air, forms a mixture of nonmetallic trisulphide and pentasulphide. Identify the nonmetal and give the reaction.



$$(CH_3)_3P = O$$ exists but $$(CH_3)_3N = O$$ does not. Give reasons.



What is polymorphic from of Sulphur?



$$ \underset { (white) }{ P_{ 4 } } +SOCI_{ 2 }-PCI_{ 3 }+SO_{ 2 }+'x' $$   identify the 'x'



Explain the structure of ammonia.



A yellow crystalline allotropic form of sulphur (A) on heating at X $$^{ \circ  }{ C }$$ converts to another allotropic sulphur (B) that has needle shape. Identify A, B, X.



Class 12 Medical Chemistry Extra Questions