| Author | Message | ||
     20001078 Username: 20001078 Registered: 04-2003 |
MS WUT i am 3a37 我想問下是不是只要記 1-20的electronic arragement啊~ (Atomic Structure) | ||
| Wut Pui Fun Username: wpf Registered: 04-2003 |
Dear 20001078, 1) You have to remember the order of the atomic number of the first 20 elements. 2) If the element has the atomic number larger than 20, then you need not remember its atomic number. But it doesn't mean that I cannot ask you to draw its electronic arrangement. It is because I can give you some related information.(e.g.number of protons is given.) Then you can predict it. If you have more enquiry, feel free to ask me. Ms.Wut |