Why do atoms repel when closer but attract when farther apart?
Jul 2, 2019 · Now when two atoms (which do have their own separate inner electron shells) try to come closer (but still way too far for the PEP to be important for the quarks), these inner …
Why do atoms stick together? - Physics Stack Exchange
The atoms in my table "stick together" to form a rectangle. Why? What makes them stick together? I know about ionic/covalent bonding etc., but consider a sheet of pure iron. Just …
Did atoms in human body indeed come from stars?
Feb 3, 2016 · The electrons of the hull of atoms in parts formed during the big bang, part of them come into existence, when neutrons decay to protons. These neutrons may have been free …
atomic physics - Why are attraction forces long range forces and ...
Apr 15, 2021 · When two atoms come close to each other in order to form a covalent bond, then attractive forces initially act on them (due to attraction between nuclei and the electrons). …
nuclear physics - Why do fusion and fission both release energy ...
Jan 30, 2019 · I only have high school physics knowledge, but here is my understanding: Fusion: 2 atoms come together to form a new atom. This process releases the energy keeping them …
What does it mean for two objects to "touch"?
In other words, there's always a infinitesimal distance in between the two objects. Atoms don't "touch" each other; even the protons and neutrons in the nucleus of an atom aren't "touching" …
Why do atoms emit a certain colour of light? (The emission spectra)
Feb 17, 2019 · Atomic line emission and absorption spectra come from the differences between the discrete energy levels in the atom, and those are the solutions of a complex dynamical …
Where do electrons get their ever-lasting circulating energy?
Why do electrons occupy the space around nuclei, and not collide with them? What prevents an atom's electrons from "collapsing" onto its protons? Why don't electrons crash into the nuclei …
Why do two hydrogen atoms bond? - Physics Stack Exchange
Dec 27, 2021 · I was wondering (with my limited classical physics knowledge) why two hydrogen atoms tend naturally to a bonding configuration, I mean, given two hydrogen atoms with zero …
Why do electrons couple in atoms? - Physics Stack Exchange
The electrons may thermally or by photon interactions be kicked up to higher energy levels giving the characteristic spectral lines of the specific atom when returning to the ground state. …