Which of the following statements concerning the four quantum numbers is false?

When an atom is placed in a magnetic field,then due to the presence of electrons in it:

What is the number of unpaired electrons present in $d$ orbitals of $Cr (Z=24)$ to have extra stability?

The maximum number of orbitals which can be identified with $n=4$ and $m_l=0$ is $\qquad$

On what does the energy of hydrogen and hydrogen-like species depend? On what does it not depend?

Which of the following statements are correct?
$(A)$ The electronic configuration of $Cr$ is $[Ar] 3d^5 4s^1$.
$(B)$ The magnetic quantum number may have a negative value.
$(C)$ In the ground state of an atom, the orbitals are filled in order of their increasing energies.
$(D)$ The total number of nodes is given by $n-1$.
Choose the most appropriate answer from the options given below.