Atomic Definition and 812 Threads

I have very little training in the area of Physics, but enough to understand most of what is said on this forum. This is a first time post. My question has to do with gravity on an atomic level. This question is for those of you familiar with trying to combine all four natural forces...

Hello everyone I am new to PF actually this is my first thread. I am looking for the equation to see how far and how, the radiation from the Nuclear Blast using E=mc^2. Can anybody help? Please[?] Nicole

Which of the following atomic elements does not belong in the following list? Carbon, Neon, Silicon, Phosphorus, Iodine, Xenon

Please I need detailed information about the ionization of atomic hydrogen , quantum states , values of energies ... etc

does anyone know if the atomic particles (protons, neutrons, electrons) have a particular size/shape? perhaps the idea of them having a certain radius is an imaginary concept? i would love to hear a knowledgeable opinion!

I wrote this short article for my grandson concerning the formation of clouds at an atomic level. I would be interested in constructive criticism before I put it away until he gets older. If anyone is aware of websites or other sources of information concerning this subject, I would be...

dear reader, why are the protons embeded with the nutrons? does nutron get atrracted to protons?

[SOLVED] Atomic radii I need to know precisely how the average atomic radii are calculated or found? I would expect it to be on the average contents of an experimental sample with adjustment for differing percentages. This would mean that isotopes missing from the sample are not included in...

A pi meson has mass of 139MeV/c^2. what is this in atomic mass? HOw do i solve for this? what steps do I need to do, any examples you can give to help me with to solve? Dx :wink:

Apologies for raising this question again, but it has finally dawned on me that as the Tables of Elements give an average mass (i.e. for all isotopes of each element) as the Relative Atomic Mass for that element; then my question is - Is the figure quoted for Atomic Radii also an average...

What is the importance of atomic decay?

Can anyone tell me where to find Atomic Radii for Isotopes? (All the tables I have found so far only list atomic radii for the 92 elements shown on the main table.)