Question

part c
arsenic
express your answer in complete form, in order of increasing orbital. for example, 1s²2s² would be entered as 1s^22s^2

Explanation:

Step1: Determine atomic number of arsenic

Arsenic (As) has atomic number 33.

Step2: Write electron - configuration

Using the Aufbau principle, Pauli - exclusion principle and Hund's rule, the electron - configuration is $1s^22s^22p^63s^23p^64s^23d^{10}4p^3$.

Answer:

$1s^22s^22p^63s^23p^64s^23d^{10}4p^3$