Question

give a reason why one atom of carbon shares four electron pairs, one with each of the four atoms of chlorine during the formation of covalent molecule - carbon tetrachloride.

Answer 1

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Answer 2

Answer:

C-atomic no. = 6 = 2, 4, has 4 valence electrons, it cannot lose 4 electrons also it cannot gain 4 electrons for energy considerations. Hence C atom shares valence electrons. Each atom of Cl has 7 electrons in outer most orbit and can gain 1 electron. Hence to attain octet i.e. 8 electrons in valence shell it needs 4 Cl-atoms to form covalent molecule of CCl4.