This question is baffling me!
When uranium-235 absorbs a neutron, it decays into two other elements and releases two neutrons.
How does the mass number of an atom change when it absorbs a neutron?
The answer is it increases by one, but why? Two more are given off, so surely it should decrease by one?
can someone explain please?
GCSE Physics question: nuclear fission watch
- Thread Starter
- 31-01-2010 19:25
- 31-01-2010 19:31
As soon as it absorbs the neutron (ie, before it decays), its mass number will increase by 1, since that's the mass of a neutron. I think it was just the wording you found misleading.
- 31-01-2010 19:39
Yeah the wording is weird.
Think of the question as being seperate from the line before it.