12. which element has the electron configuration of 1s22s22p63s23p5? chlorine iron aluminum bromine clear all

12. which element has the electron configuration of 1s22s22p63s23p5? chlorine iron aluminum bromine clear all
Answer
Brief Explanations:
The electron - configuration 1s²2s²2p⁶3s²3p⁵ indicates that the total number of electrons is 2 + 2+6 + 2+5=17. Chlorine has an atomic number of 17 and thus 17 electrons. Iron has 26 electrons, aluminum has 13 electrons, and boron has 5 electrons.
Answer:
Chlorine