Ncert Exercises & Solutions

1.3 Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous.

(i) Tetra phosphorus decoxide (P4O10) (vii) Graphite

(ii) Ammonium phosphate (NH4)3PO4 (viii) Brass

(iii) SiC (ix) Rb

(iv) I2 (x) LiBr

(v) P4 (xi) Si

(vi) Plastic

Ionic → (ii) Ammonium phosphate (NH₄)₃PO₄, (x) LiBr

Metallic → (viii) Brass, (ix) Rb

Molecular → (i) Tetra phosphorus decoxide (P₄O₁₀), (iv) I₂, (v) P₄.

Covalent (network) → (iii) SiC, (vii) Graphite, (xi) Si

Amorphous → (vi) Plastic