Answer
Please see the work below.
Work Step by Step
The element with atomic number 73 is Tantalum, Ta.
The electronic configuration of Tantalum can be written using the nearest previous inert gas. Here the inert gas is Xenon with an atomic number 54 having a valence shell configuration $5s^{2}5p^{6}$.
Hence the electronic configuration = $[Xe]4f^{14}5d^{3}6s^{2}$
Here the 5d orbitals contain three unpaired electrons and hence Ta is paramagnetic.
