Below is the lewis structure of the chloroform molecule. count the number of bonding pairs and the number of lone pairs around the carbon atom.

            The carbon atom in Chloroform has FOUR bonding pair electrons and ZERO lone pair of electrons.

Explanation:
                   The carbon atom in Chloroform is bonded to three chlorine atoms and one hydrogen atoms through a single bonds. And the carbon is sp³ hybridized. As we know the electronic configuration of carbons is,

                          Ground State  =  1s², 2s², 2p²

                          Excited State  =  1s², 2s¹, 2px¹,2py¹, 2pz¹

As there are four unpaired electrons in excited state which are all involved in bonding with chlorine atoms and hydrogen atom, therefore, no lone pair of electrons are left.

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