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.
Most parents expect their child to start walking around her first birthday, but the normal age range actually varies from as young as 9 months up to 18 months. Within this normal range, a child may be closer to the 18-month end for a couple of reasonsâmainly lack of opportunity, genetics, and temperament.