Atomic nuclei, composed of protons and neutrons, hide quarks and gluons at their core. These latter particles, still challenging to study, have long eluded scientists. In the mid-20th ...

Number of protons Z = 30 Number of protons + neutrons A = 64 Number of neutrons N = 64 - 30 = 34 Since this is a nucleus there are no electrons There are 30 protons and 34 neutrons.

When two hydrogen atoms get close enough, the electron from each atom feels an attraction from the proton in the other atom's nucleus. This attraction pulls the atoms together. The electrons end up ...

Seven years ago, a scientist accomplished what no one else had before: capturing an image of a single atom. This stunning ...

The nucleus is very small compared to the atom as a whole: as electrons are even smaller, most of an atom is empty space the diameter of a nucleus can be 100,000 times less than the diameter of an ...

A sodium and chlorine atom are near each other. An electron from each atom feels the attraction from the other atom's nucleus. The attraction by chlorine is stronger than the attraction by sodium. An ...

Beyond the simplistic models of protons and neutrons clustered together like gumballs in a dispenser, the nucleus of a ...

What’s the safest place to store important information? No, it’s not your external hard drive or some secret cloud ...

The nucleus of an atom doesn’t really resemble what is shown in textbooks — they actually come in a variety of shapes, which drive an element’s behaviour. Current methods essentially take a ...

The simple reason is that it takes much more energy to excite a nucleus into a higher energy state than it does an atom. Atomic clocks typically excite cesium atoms with photons of energy 4 x 10-5 ...