What type of reaction is a neutralization reaction?

When an acid is neutralised by an alkali the reaction is exothermic (bond formation is an exothermic process so the reaction is exothermic because bonds are being formed)

The most plausible answer is b, duration. the given amount of time is considered how long it last for.

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom