The abbreviated electron configuration for arsenic is: A)[Ar]4s²4p³ B)[Ar]4s²4d¹⁰4p³ C)[Ar]4s²3d¹⁰4p³ D)[Zn]4p³

Question

Quizplus · Accepted Answer

The electron configuration of arsenic is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³. 
The first part, [Ar], represents the electron configuration of the noble gas argon (1s²2s²2p⁶). 
The second part, 3s²3p⁶, represents the valence electrons of arsenic. Therefore, the abbreviated electron configuration for arsenic is [Ar] 3d¹⁰4s²4p³.
Option C is the only one that includes the correct number of electrons in the d-subshell for the ground state electron configuration of arsenic.

The Abbreviated Electron Configuration for Arsenic Is