Chemistry - GENERAL CHEMISTRY Question with Solution | TestHub

The atomic number of Platinum is $78$. Platinum belongs Nickel group, and it is 5d series element. Electronic configuration of Platinum is$1{\mathrm{s}}^{2}2{\mathrm{s}}^2{\mathrm{p}}^{6}3{\mathrm{s}}^2{\mathrm{p}}^6{\mathrm{d}}^{10}4{\mathrm{s}}^2{\mathrm{p}}^6{\mathrm{d}}^{10}{\mathrm{f}}^{14}5{\mathrm{s}}^2{\mathrm{p}}^6{\mathrm{d}}^{9}6{\mathrm{s}}^1$

${}_{78}\mathrm{Pt}=\left[\mathrm{Xe}\right]4{\mathrm{f}}^{14}5{\mathrm{d}}^{9}6{\mathrm{s}}^1$(Exceptional electronic configuration)