Electronic configuration of bromine ?

2 Answers
Feb 28, 2018

The bromine atom...?

Explanation:

Well, for bromine, Z=35...and we use the "aufbau principle.."

underbrace(1s^(2)2s^(2)2p^(6)3s^(2)3p^(6))_"argon confiuration"4s^(2)3d^(10)4p^5

...or [Ar]4s^(2)3d^(10)4p^5

Feb 28, 2018

The electron configuration of Bromine is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^5.
This can be shortened to [Ar] 4s^2 3d^10 4p^5.

Explanation:

Use a chart such as the one below to fill the subshells in order of the diagonal lines. http://homepages.wmich.edu/~dschreib/Courses/Chem110/electconfig.htmhttp://homepages.wmich.edu/~dschreib/Courses/Chem110/electconfig.htm

s subshells hold a maximum of 2 electrons, p subshells hold 6 electrons, d subshells hold 10 electrons, and d subshells hold 14 electrons.

The angular momentum quantum number, l, which represents different subshells can be used to find the maximum number of electrons in the subshell, and the number of orbitals using 2(2l+1) and 2l+1, respectively.

An l of 0 corresponds to the s subshell, 1 corresponds to the p subshell, 2 to the d subshell, and 3 to the f subshell.