Ground state electron configuration for arsenic?

Answer 1

The electron configuration of arsenic (At) is 4s2 3d10 4p3.
The electron configuration of arsenic allows it to combine in several different valances, including -3, 0, +3 and +5. It combines with other elements, including hydrogen, oxygen, the halogens and sulfur.
Many of these compounds are extremely poisonous. Arsenic (III) oxide, white arsenic is one of the most well-known. In dilute concentrations, too weak to be poisonous, arsenic is a carcinogen, according to Reference.com.

Answer 2

To come up with the electron configuration for Arsenic, you first need to count up how many electrons it has (it will be the same as the atomic number since the charge is neutral)... 18. Then you need to follow the aufbui order and work your way up the orbitals filling them in. 1s takes 2electrons, 2s takes 2 electrons, 2p takes 6 electrons, 3s takes 2 electrons, and lastly 3p takes 6 electrons (total of 18). The order of the orbitals and how many electrons each can take you will just need to memorize or learn some tricks to remember.

You can also just take a short cut and ignore all the orbitals before the row Arsenic is on to show ONLY the valence electrons, ie:

[Ne] 3s2 3p6

If you are still having trouble, http://mymcat.com/wiki/Electron_Configuration, has a lot of examples, including your question.

Answer 3

Arsenic is in period 4, so valence electrons will be in 4th shell. It is a p block element, so filling orbitals will be p (4p), and it comes after transition elements, so it will have the 3d orbitals already filled. Thus, it will be [Ar]4s2 3d10 4p3

Answer 4

I believe there are many excited states...and only one ground state. (wrong) 1s22s22p63s23p64s23d104p25s1. just take the last electron in the ground state and bump it up one level....

Answer 5

electron configuration: [Ar] 4s2 3d10 4p3

Answer 6

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3

Answer 7

4s2 3d10 4p3

Answer 8

1s22s22p63s2sp6