Question

write the ground state electron configuration for arsenic.

Explanation:

Step1: Recall atomic number of arsenic

Arsenic (As) has atomic number 33.

Step2: Apply Aufbau principle

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³

Answer:

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³