Among the following find the correct statements ?

1.Neutralisation, salt hydrolysis, precipitate formation, complex formation involve generally no electron transfer

2.Reductant provides electron or electrons and an oxidant accepts electron (or) electons

3.Oxidant is reduced by accepting elecctrons and reductant is oxidised by losing electrons

4.The ions which do not undergo any electronic change during a chemical reaction are termed as spectator ions

All the statements are correct.