Standard nuclear notation for particle physics help.Watch
First of all, how should I write a proton as: 11p+ or as 11H+?
Secondly, how should I write an anti proton, for most antiparticles you simply put a line _ like that above the symbol, but for a positron (which is the anti-particle of an electron) I have seen it written as just e+.
Thirdly, is this okay as an equation say 42He2+ --> 211p+ + 210n0, I ask because I have only ever seen in mark schemes it written as 42He2+ --> 11p+ + 11p+ + 10n0 + 10n0. The difference being that this one doesn't have a 2 before the neutron and proton.
Fourthly, do you only have to put the mass number and atomic number for elements, neutron and protons, not any other baryon? Or do you even have to put mass and atomic number for neutrons and protons?
Finally, do you always have to put the charge of a particle, even for neutral particles, elements and neutrinos?
Sorry for this many questions, it's just that I cant find any sources which clearly state what the standard notation is, if anyone has any good sources please link. Thankyou for your time
I have a few questions about what actually is standard notation for Edexcel A2 Unit 4 Physics.
For Unit 4 you need to know only the standard notation for the electron,proton,neutron and positron. It would also be better to know the symbols for the quarks: up (u), down (d), charm (c), strange (s), top(t) and bottom (b) as well as for the leptons although if they do question about them (for example you are asked to write a equation for a particle reaction involving a quark), they would most probably provide a table of the quarks and leptons involved with their symbols, so its easy for you.
You need to know the symbols for the antiparticles for the above particles. (Simply put a dash over the symbol for the particle
But for positrons , AVOID having an e with a __ over it. The convention is to use e+)
Also it would be benefitting to know the symbols for the mesons: pion (pi+ pi- pi0) and kion. (k+, k- and k0), but these symbols too mostly be can deduced from the given information in the question.
If you have any problems/doubts with the marksheme and its suggested answers for a question then go through the examiners report for that question. It would give you a better insight into the marksheme and acceptable answers.
That said, I usually write the numbers for baryons and elements and for the electron only. For the rest it is not needed I think. If you write the numbers (atomic and mass numbers), then you don't need to put in the positive or negative sign.
11p can be written as p+.
0-1e can be written as e-
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