Classify the following solids in different categories based on the nature of

intermolecular forces operating in them:


Potassium sulphate, tin, benzene, urea, ammonia, water, zinc sulphide,


graphite, rubidium, argon, silicon carbide.



Substance



Type of solid



Potassium sulphate



Ionic solid



Benzene



Molecular solid (non-polar)



Urea



Polar molecular solid



Ammonia



Polar molecular solid



Water



Hydrogen bonded molecular solid



Zinc sulphate



Ionic solid



Graphite



Covalent/ Network solid



Rubidium



Metallic solid



Argon



Molecular solid (non-polar)



Silicon Carbide



Covalent/ Network solid




Explanation: Ionic solids are those in which constituents particles are cations and anions which are held together by columbic force of interactions


e.g.- K2SO4⇒ K+ + SO4—


Metallic solids are metals in which metal ions (also called kernals) are held together by metallic bonds.)


Molecular solids are made up on molecules or inert gases.


In covalent solids constituent particles are atoms which are held together by continuous system of covalent bonds.


Note: Though in solid argon the constituent particles are atoms even it is categorised as molecular solid because the particles are held together by vander waal forces so all solids of zero group elements are placed under the category of molecular solids.)


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