Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous
(i) Tetraphosphorus decoxide `(P_4O_10)` , (ii) Ammonium phosphate, `(NH_4)_3PO_4` , (iii)SiC , (iv)`I_2` , (v) `P_4` , (vi) Plastics ,(vii) Graphite ,(viii) Brass ,(ix) Rb ,(x) LiBr ,(xi) Si

Explanation

To classify the given solids, we will analyze each one based on their bonding types and structural characteristics. Here’s the step-by-step classification:

1. **Tetraphosphorus decoxide (P₄O₁₀)**:
- **Analysis**: P₄O₁₀ consists of discrete molecules held together by van der Waals forces.
- **Classification**: Molecular solid.

2. **Ammonium phosphate ((NH₄)₃PO₄)**:
- **Analysis**: This compound contains ammonium ions (NH₄⁺) and phosphate ions (PO₄³⁻), which are held together by ionic bonds.
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