The correct set of quantum numbers for the unpaired electron of $Cu$ atom is

Write the electronic configuration of an atom with $Z = 16$. How many $p$ electrons are present in it,and how many fully filled and half-filled orbitals does it contain?

The quantum number which specifies the location of an electron as well as energy is

An $e^-$ has a magnetic quantum number $(m_l)$ of $-3$. What is the minimum possible principal quantum number $(n)$ for this electron?

In a potassium atom,the electronic energy levels are in the following order:

The electrons,identified by quantum numbers $n$ and $l$ as $(i) n = 4, l = 1$,$(ii) n = 4, l = 0$,$(iii) n = 3, l = 2$,$(iv) n = 3, l = 1$,can be placed in order of increasing energy,from the lowest to highest,as: