Question

how do you write the element configuration of beryllium and what is it's orbital notation?

Answer 1

The electron configuration of beryllium (atomic number 4) is 1s²2s², which can also be indicated in noble-gas form as [He]2s². Orbital notation is a drawing of electron configuration where s,p,d,f are the kind of the orbitals and the number in degrees is the how many electrons are present at this orbital.