Question

A chemistry student was asked to draw the electron configuration for carbon. Explain what is wrong with the electron configuration below. What rule did the student violate (Aufbau principle, Pauli Exclusion principle, or Hund's rule)?

1s22s23p2

Answer 1

I am pretty bad at chem.

Step-by-step explanation:

Im not sure.

Answer 2

The student violated the aufbau principal as electron configurations must fill lowest energy levels before moving to the next level (3s2 comes before 3p2)