What is the full, ground-state electronic configuration for a neutral atom of As?
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 3
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 1
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 7 4p 6
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 4
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 2