Selenium (atomic # = 34) = 34 electrons
Electron configuration: 1s22s22p63s23p64s23d104p4
n = 4
4s2 and 4p4
▪ 4s → 2 electrons
▪ 4p → 4 electrons
In the ground state of selenium, how many electrons share the quantum number:
n = 4 _____________
l = 2 ______________
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