What is the electron configuration for Bromine; Br? 1s^22s^22p^circ 3s^23p^circ 4s^23d^1 1s^22s^22p^circ 3s^23p^circ 4s^23d^104p^5 1s^22s^22p^4 1s^22s^22p^circ

The correct electron configuration for Bromine (Br) is:<br /><br />$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{5}$<br /><br />This configuration represents the distribution of electrons in the various energy levels and sublevels of the atom. Bromine has an atomic number of 35, which means it has 35 electrons. The electron configuration shows that there are 2 electrons in the 1s orbital, 2 electrons in the 2s orbital, 6 electrons in the 2p orbital, 2 electrons in the 3s orbital, 6 electrons in the 3p orbital, 2 electrons in the 4s orbital, 10 electrons in the 3d orbital, and 5 electrons in the 4p orbital.