Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
chemistry spdf help plez. thanx?
Write the electron cofiguration and noble gas configuration for arsenic.
The anwser in the back of the book was Arsenic: 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^3; [Ar]= 3d^10 4s^2 4p^6.
I don't understand why is it not Aresnic: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^3 Ar=[4s^2 3d^10 4p^3].
Basically, im confused as to why the aufbau diagram has the order 3p^6 4s^2 3^10 then the anwser is written in a different order.
1 Answer
- pisgahchemistLv 78 years agoFavorite Answer
Neutral arsenic has three electrons in the 4p sublevel. The electron configuration is ...
As ..... [Ar] 3d10, 4s2 4p3
The hypothetical arsenide ion, As^3-, would have a filled 4p sublevel
As^3- .... [Ar] 3d10, 4s2 4p6
It would appear that the back of the book contains a typo.