Please help me explain this- test in two days!!! I don't understand anything... =[
2. in the periodic table, some atomic masses are written with only a few SF. Other are written with as many as 7 or 8 SF. So, how atomic mass is calculated to explain these differences?
3. and why are gamma rays and not alpha or beta radiation used in treating cancer?
please help, i will really appreciate it.Why does splitting a nucleus produce tremendous amounts of energy?
I'm not sure about your first question...
2. The atomic masses that have fewer digits are normally the ones that are unstable. The methods for measureing them aren't as accurate, thus less SFs.
3. Alpha and beta radiation doesn't penetrate the body. Actually alpha is so weak that is can be stopped by a piece of paper. Beta is a bit better, but still not strong enough to get through the body and actually kill anything.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment