Question

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

Explanation:

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