Like all the elements in the nitrogen family, Arsenic has 5 valence electrons. The five electrons inhabit the 4s and 4p orbitals:
As: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3
im pretty sure it is 2. i was hoping to find the answer to this online, but it turns out I'll be answering it This is the electron configuration for Zr: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2 and...