Write the electron configuration for Se using the noble gas core format.
Selenium [Ar] 3d10 4s2 4p4
http://www.webelements.com/selenium/atoms.html
To write the electron configuration for Se (selenium) using the noble gas core format, we need to identify the noble gas that comes before selenium in the periodic table. In this case, the noble gas with a lower atomic number than selenium is argon (Ar), which has an electron configuration of 1s² 2s² 2p⁶ 3s² 3p⁶.
Next, we can represent the electron configuration of selenium by using the noble gas core format, which involves placing the noble gas symbol (Ar) in brackets and then continuing with the configuration of the remaining electrons after the noble gas core.
The electron configuration for selenium (Se) using the noble gas core format is:
[Ar] 3d¹⁰ 4s² 4p⁴