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NCERT Class XII Chemistry
Chapter - The Solid State
Questions with Solutions

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Question : 3
Total: 50
Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous.
(i) Tetraphosphorus decoxide, P‌4O‌10
(ii) Ammonium phosphate, (NH‌4)‌3PO‌4
(iii) SiC
(iv) I‌2
(v) P‌4
(vi) Plastic
(vii) Graphite
(viii) Brass
(ix) Rb
(x) LiBr
(xi) Si
Solution:  
P‌4O‌10 - molecular, (NH‌4)‌3PO‌4 - ionic, SiC - network(covalent), I‌2 - molecular, P‌4 - molecular, plastic - amorphous, graphite - covalent, brass - metallic, Rb - metallic, LiBr - ionic, Si - covalent
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