Question

Electronic configuration of bromine ?

Answer 1

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`

Answer 2

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.

`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.