Question
Explain characteristics and structure of silicon using a neat labelled diagram.

Answer

$1.$ Silicon $(Si)$ has atomic number $14$ and its electronic configuration is $1s^2 2s^2 2p^6 3s^2 3p^2.$
$2.$ Its valence is $4.$
$3.$ Each atom of $Si$ forms four covalent bonds with its neighbouring atoms. One $Si$ atom is surrounded by four $Si$ atoms at the comers of a regular tetrahedron as shown in the figure.
Image

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