Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amor- phous : {:("(i) Tetra phosphorus decoxide "(P_(4)O_(10)),"(ii) Ammonium phosphate "(NH_(4))_(3)PO_(4)),("(iii) Sic ",(iv) I_(2)),("(v) "P_(4),"(vi) Plastics"),("(vii) Graphite","(viii) Brass"),("(ix) Rb","(x) LiBr"),("(xi) Si",):}

Classify each of the following solids as ionic, metallic, molecular, n

1.	Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amor- phous : {:("(i) Tetra phosphorus decoxide "(P_(4)O_(10)),"(ii) Ammonium phosphate "(NH_(4))_(3)PO_(4)),("(iii) Sic ",(iv) I_(2)),("(v) "P_(4),"(vi) Plastics"),("(vii) Graphite","(viii) Brass"),("(ix) Rb","(x) LiBr"),("(xi) Si",):}
Answer» Solution :SUBSTANCES belonging to different categories are grouped as under : Ionic SOLIDS : `(NH_(4))_(3)PO_(4)`, LiBr Metallic solids : BRASS, Rb Molecular solids : `P_(4)O_(10), I_(2), P_(4)` Network (covalent) SOLID : Graphite, SiC, Si Amorphous solids : Plastics.