Classify the following solids as ionic , metallic , molecular , covalent network or amorphous .
i) Si ii) `I_(2)` iii) `P_(4)` iv) Rb v) SiC
vi) LiBr vii) Ammonium Phosphate `(NH_(4))_(3) PO_(4)` viii) Plastic
ix) graphite x) Tetra phosphorous decoxide