What does “Types of crystalline solids” actually mean in The Solid State, and why does it matter for NEET?
ionic (electrostatic), covalent-network (diamond), metallic (electron sea) and molecular (weak forces) solids differ hugely in hardness and conductivity.
In simple words: ionic (electrostatic), covalent-network (diamond), metallic (electron sea) and molecular (weak forces) solids differ hugely in hardness and conductivity. Getting Types of crystalline solids clear matters because NEET questions on The Solid State usually test this idea directly, not just a formula you memorised.
Key point
Types of crystalline solids
Common mistake
assuming all solids conduct or melt similarly.
Memory tip
the bonding type predicts hardness, melting point and conductivity.
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