Here's why:

* Carbon (C) has four valence electrons, meaning it can form four bonds.

* Chlorine (Cl) has seven valence electrons and forms one single bond with carbon.

* Hydrogen (H) has one valence electron and forms one single bond with carbon.

The four bonds around the carbon atom are arranged in a tetrahedral shape, with bond angles of approximately 109.5 degrees. This arrangement minimizes the repulsion between the electron pairs in the bonds, creating the most stable configuration.