$p-$ orbitals of an atom in the presence of a magnetic field are

Identify which of the following sets of quantum numbers are not possible and explain why.
$(a) n = 0, l = 0, m_l = 0, m_s = +1/2$
$(b) n = 1, l = 0, m_l = 0, m_s = -1/2$
$(c) n = 1, l = 1, m_l = 0, m_s = +1/2$
$(d) n = 2, l = 1, m_l = 0, m_s = -1/2$
$(e) n = 3, l = 3, m_l = 3, m_s = +1/2$
$(f) n = 3, l = 1, m_l = 0, m_s = +1/2$

The electronic configuration of the element with atomic number $27$ is:

Which one of the following electronic arrangements is absurd?

If the value of the azimuthal quantum number $l$ is $2$,then the total possible values of the magnetic quantum number will be

The maximum number of electrons that can be accommodated in a $3d$ subshell is