Select the single best answer. Select the appropriate statements and arrange them in a logical order to explain the bonding in CF_4. i. Each of the singly occupied hybrid orbitals on C overlaps with a singly occupied 2p orbital on an F atom. ii. The unhybridized 2p orbitals on C interact with the 2p orbitals on the F atoms to form pi bonds. iii. The 2s and three of the 2p orbitals on C combine to form four sp^3 hybrid orbitals. iv. A 2s electron is promoted to a 2p orbital on C. v. The 2s electrons in C are promoted to 2p orbitals. vi. Each of the singly occupied 2p orbitals on C overlaps with a singly occupied 2s orbital on a F atom. v, vi iv, iii, i, ii v, vi, ii iv, iii, i