Answer:
Arsenic is classified as a metalloid. Aufbau Principle: The Aufbau principle, also known as the Aufbau law, states that when an atom or ion is in its ground state, electrons fill atomic orbitals of the lowest possible energy levels before moving on to higher levels.
Step-by-step explanation:
An element's electron configuration can be represented using Aufbau diagrams or energy level diagrams. An Aufbau diagram uses arrows to represent electrons. You can use the following steps to help you to draw an Aufbau diagram: Determine the number of electrons that the atom has.