Which is a characteristic of addiction polymerization

It would be (at) + cu (s)

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

No is the answer to the question

Maybe you should get some from your teacher and learn more so you can get your grades up and maybe study a bit more