What is the electron configuration of the element with 27 protons?
See your other post above.
To determine the electron configuration of an element, you need to know the atomic number, which represents the number of protons in an atom's nucleus. In this case, the element with 27 protons has an atomic number of 27.
To find the electron configuration, you can use the Aufbau principle, which states that electrons fill atomic orbitals in order of increasing energy. The electron configuration is typically written using the noble gas shorthand, which means we use the symbol of the noble gas that comes before the element and then continue with the rest of the configuration.
In the case of an element with 27 protons, the noble gas with the closest lower atomic number is Argon (Ar), which has an atomic number of 18. So, we can start by writing the electron configuration of Argon: 1s² 2s² 2p⁶ 3s² 3p⁶.
After Argon, we fill the remaining energy levels. Since the atomic number is 27, we have 9 more electrons to distribute. We continue with 4s² 3d⁵, filling the 4s orbital with 2 electrons and the 3d orbital with 5 electrons.
Putting it all together, the electron configuration of the element with 27 protons is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵.