Question

write the ground and ionic electronic configuration of the following atomic numbers ; 16,49,35,48, 39?

Answer 1

I'll do 16. 16 is S. So we have 16 electrons.

16S.......1s2 2s2 2p6 3s2 3p4, Ground state.
16S^2-...1s2 2s2 2p6 3s2 3p6. S^2- with 18 electrons.
If you don't know the electron configuration for an element I refer you to www.webelements.com That site has electron configurations for all of the elements in the periodic table.
Show your work if you have other questions.