FORMATION OF A CARBON TETRACHLORIDE A carbon atom has an electron arrangement of 2.4. It has 4 valance electrons . Each carbon atom needs 4 more electrons to achieve a stable octet electron arrangement. A chloride ion has an electron arrangement 2.8.7. It has 7 valance electrons . Each chloride ion needs 1 more electron to achieve a stable octet electron arrangement. 4 chloride ions will combine with 1 carbon atom through the sharing of electrons . Each of 4 chloride ions contributes 1 electron and 1 carbon atom contributes 4 electrons for sharing .
FORMATION OF A CARBON TETRACHLORIDE
One carbon atom is bonded to each of 4 chlorine atoms by a shared pair of electrons so that all the five atoms achieve stable octet electron arrangement . Hence, a covalent molecule , CCl4, with 4 single covalent bonds is formed. LEWIS STRUCTURE OF CCL4