Question

$3d_{z^{2}}$ orbital is spherically symmetrical. The shapes of all five $d$-orbitals are similar to each other.

• A. If both assertion and reason are true and reason is the correct explanation of assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.

Answer 1

Answer: (D)

If both assertion and reason are false.

Answer 2

s-orbital is spherically symmetric, $p$-orbitals have dumbell shape and d-orbitals have double-dumbells. Among all five $d$-orbitals, $d _{z^{2}}$ has a different shape where it has one dumbell along $z$-axis and electron ring perpendicular to it. In the absenceof any field the orbitals have same energy i.e. they are degenerate orbitals but have different shape/orientation. Both Assertion and Reason are incorrect