Are These Electronic Configurations for Ions Correct?

[lorka150]

are these correct? i always get confused with the rules for the end of the order:

N^3- >> [Ne]
Tl^3+ >> [Xe]4f14 3d10
Fe^3+ >> [Ar]3d5

 

[Astronuc]

This might be helpful -

http://www.webelements.com/ (when its up and running)

or

http://www.chemie.de/web-elements-I/index.html

N electron configuration [He].2s2.2p3 then add 3e and one has

1s².2s².2p⁶, which is the same as Ne

Think of the order in the periodic table C, N, O, F, Ne

You are correct on Tl³⁺ and Fe³⁺.