The oxidation state of an atom is the fictitious charge that an atom would have if all bonds between atoms of different elements were 100% ionic. Thus, oxidation is better defined as an increase in oxidation state, and reduction as a decrease in oxidation state.
Most babies take their first steps sometime between 9 and 12 months and are walking well by the time they're 14 or 15 months old. Don't worry if your child takes a little longer, though. Some perfectly normal children don't walk until they're 16 or 17 months old.
 What to expect from your 16 to 18 month old . Month 16. Most toddlers should be able to. . . Turn pages of a book when you read. Gets attached to stuffed animal or other object. Walk well. Sing and like to sing. Get upset when frustrated. Some toddlers will probably be able to. . . Walk backwards.