Explain how to write the abbreviated electron configuration for selenium (Se), and provide the correct abbreviated electron configuration.
You can submit your answer in a format that does not require superscripts.
For example, 1s22s22p (neon) can be entered as 152, 252, 2p6.

Icant see the pictures 

Sorry i think the answer is b

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.