If the electron configuration of an element is p1s² 2s² 2P5; how many unpaired electrons are there? by Sunday | Oct 13 | Chemistry JAMB | 0 comments A. 2 B. 8 C. 1 D. 4 Correct Answer: Option C – 1 Users Also Read These:The number of electronic shells contained in an atom…How many unpaired electrons are there in an atom of…The electronic configuration of an element X is 1s²…The electronic configuration of an element is 1S²…An element X with electronic configuration 1s² 2s²…