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
(i) Tetra phosphorous decoxide (P4O10): molecular
Explanation: Molecular solids are made up on molecules or inert gases.
(ii) Ammonium phosphate (NH4)3PO4: Ionic
Explanation: Ionic solids are those in which constituents particles are cations and anions which are held together by coulombic force of interactions
e.g.- K2SO4⇒ K+ + SO4—
(iii) SiC: Covalent (network)
Explanation: In covalent solids constituent particles are atoms which are held together by continuous system of covalent bonds.
(iv) I2 :molecular
Explanation: Molecular solids are made up on molecules or inert gases.
(v) P4: Molecular
Explanation: Molecular solids are made up on molecules or inert gases.
(vi) Plastic: Amorphous
Explanation: Amorphous solids are not true solids, in these solids the constituent particles (atoms, ions or molecules) have short range order of arrangement.
(vii) Graphite: Covalent (network)
Explanation: In covalent solids constituent particles are atoms which are held together by contineous system of covalent bonds.
(viii) Brass: Metallic
Explanation: Metallic solids are metals in which metal ions (also called kernals) are held together by metallic bonds.)
(ix) Rb: Metallic
Explanation: Metallic solids are metals in which metal ions (also called kernals) are held together by metallic bonds.)
(x) LiBr: Metallic
Explanation: Metallic solids are metals in which metal ions (also called kernals) are held together by metallic bonds.)
(x) Si : Covalent (network)
Explanation: In covalent solids constituent particles are atoms which are held together by contineous system of covalent bonds.