Question

What is the noble gas configuration for the following: fluorine, phosphorus, bromine, manganese, copper?

Answer 1

`F, Z=9,` `[He]2s^(2)2p^5`

Explanation:

`P, Z=15,` `[Ne]3s^(2)3p^3`

`Br, Z=35,` `[Ar]3d^(10)4s^(2)4p^(5)`

`Mn, Z=25,` `[Ar]3d^(5)4s^(2)`

`Cu, Z=29,` `[Ar]3d^(10)4s^(1)`

For copper, an examiner would probably accept `[Ar]3d^(9)4s^(2)`