Question

When assigning electrons to orbitals, which would be the most likely 'address' for the next electron following the 5s2 electron?


5s3

5p1

4d1

5d1

Answer 1

I think you might notice where these electrons go if you look at a periodic table after the atom with 5s^2. For a helpful periodic table simulation take a look at this website. www.ptable.com click on orbitals and search around where the atom with the last electron is 5s^2. Mouse to the atom to right of this atom and notice where the electron is filled into.