Quiz Over Atomic Structure and Radioactivity

   I did pretty good on this quiz. I only missed two questions, although I know I could've gotten a 100%. The standards are all okay to me, I just missed a couple of questions from simple mistakes. This grade bought attention the mistakes I made, so I will never make these mistakes. As long as you learn from them, you haven't failed completely. It also bought attention to me what I need to  study extra, so this quiz should help me with my test.