The wave function ${\psi }_{n,l,m_l}$ is a mathematical function whose value depends upon spherical polar coordinates (r,$\theta ,\varphi$) of the electron and characterized by the quantum numbers n, l and $m_l$. Here r is distance from nucleus, $\theta$  is colatitude and $\varphi$ is azimuth. In the mathematical functions given in the Table, Z is atomic number and $a_0$ is Bohr radius.

Column 1	Column 2	Column3
(I) Is orbital	(i)  ${\psi }_{n,l,m_i}\alpha {\left(\frac{Z}{a_0}\right)}^{\frac{3}{2}}{e}^{-\left(\frac{zr}{a_0}\right)}$	(P)
(II) 2S  orbital	(ii) one radial node	(Q) Probability density  at nucleus$\alpha \frac{1}{{a_0}^3}$
(III) $2P_z$ orbital	(iii) ${\psi }_{n,l,m_j}\alpha {\left(\frac{Z}{a_0}\right)}^{\frac{5}{2}}r{e}^{-\left(\frac{Zr}{2a_0}\right)}\mathrm{COS}\theta$	(R) Probability density is maximum at nucleus
(IV) $3{d_z}^2$ orbital	(iv) xy-plane is a nodal plane	(S) Energy needed to excite electron from n=2 state to n= 4 state is $\frac{27}{32}$ times the energy needed to excite electron from n=2 state to n=6 state

For hydrogen atom, the only CORRECT combination is 

• A

  (II) (i) (Q)

• B

  (I) (iv) (R)

• C

  (I) (i) (P)

• D

  (I) (i) (S)