what is the complete electron configuration and the abbreviated electron configuration of copper (II) ion?

Question

what is the complete electron configuration and the abbreviated electron configuration of bromide ion?

Answer 1

29Cu = 1s2 2s2 2p6 3s2 3p6 3d9
[Ar] 3d9
Here is a link that describes the process very well.
http://www.mpcfaculty.net/mark_bishop/abbreviated_electron_configuration_help.htm

Answer 2

what this (ar)3d10 3s2 4p3