91Ó°ÊÓ

The oxidation level in an organic compound is calculated by using the oxidation number of carbon atoms, counting the number of oxygen atoms, and by counting the number of hydrogen atoms.

In this case, the oxidation level of a molecule is calculated by using the formula as follows:

Oxidation level = Number of bonds bonded to atoms more electronegative than

carbon+ Number of pi bonds to other carbon atoms

For

$C{H}_{3}CH=CHC{H}_3$the OL is -1

$C{H}_{3}C{H}_{2}CH=C{H}_2$ the OL is -2

$C{H}_{3}C{H}_{2}C{H}_{2}CHO$the OL is +2

$C{H}_{3}C{H}_{2}C{H}_{2}COOH$the OL is 3

Thus, the order of increasing oxidation levels is as follows:

$C{H}_{3}C{H}_{2}CH=C{H}_2<C{H}_{3}CH=CHC{H}_3<C{H}_{3}C{H}_{2}C{H}_{2}CHO<C{H}_{3}C{H}_{2}C{H}_{2}COOH$

$C{H}_{3}C{H}_{2}C{H}_{2}N{H}_2$the OL is -2

$C{H}_{3}C{H}_{2}C{H}_{2}Br$the OL is +1

$C{H}_{3}COC{H}_{2}CI$the OL is +2

$BrC{H}_{2}C{H}_{2}C{H}_{2}CI$the OL is +1

Thus, the order of increasing oxidation levels is as follows:

$C{H}_{3}C{H}_{2}C{H}_{2}N{H}_2<C{H}_{3}C{H}_{2}C{H}_{2}Br=BrC{H}_{2}C{H}_{2}C{H}_{2}CI<C{H}_{3}COC{H}_{2}CI$