Electronic Configuration — Prelims Questions

Which of the following electronic configurations is an exception to the Aufbau principle and Hund's rule, and why?

What is the maximum number of electrons that can be accommodated in a subshell for which $n=3$ and $l=2$?

An element has an atomic number of 17. What is its correct electronic configuration?

Which of the following ions has an electronic configuration of $[Ar] 3d^6$?

How many unpaired electrons are present in a neutral atom of Sulfur (S), atomic number 16?

Which of the following sets of quantum numbers is NOT possible for an electron in an atom?

Which of the following elements is diamagnetic in its ground state?