The number of protons in an atom is called its atomic number ... to achieve the same electronic structure as a noble gas i.e., have a full outer shell. For example an element in group 2 has ...

Scientists at EPFL and AstraZeneca have developed a method to map the atomic-level structure of amorphous drugs, demonstrated ...

There are many examples in nature ... of rock with a consistent chemical composition and a highly ordered structure at the ...