Question

What‌ ‌is‌ ‌the‌ ‌abbreviated‌ ‌electron‌ ‌configuration‌ ‌of‌ ‌platinum‌ ‌‌$\left(‌ ‌{{\text{Pt}}}‌ ‌\right)$‌?‌

Answer 1

The distribution of electrons in an element's atomic orbitals is defined by its electron configuration. Atomic electron configurations follow a standard notation in which all electron-containing atomic subshells are arranged in a series (with the number of electrons they possess written in superscript).

Complete answer:
Platinum is a chemical element with atomic number $78$ and the symbol ${\text{Pt}}$. It's a silverish-white transition metal that's dense, malleable, ductile, and extremely unreactive. Platinum is one of the metals with the least amount of reactivity. It has exceptional corrosion resistance, even at high temperatures, and is thus classified as a noble metal.
Only a few hundred tonnes of platinum are produced annually due to its scarcity in the Earth's crust, and given its essential uses, it is highly valuable and a major precious metal commodity.
We will use the noble gas Xenon from the fifth period of the periodic table to write the abbreviated electron configuration. The abbreviated electron configuration of platinum is:
$\left[ {{\text{Xe}}} \right]\,{\text{4f14}}\,\,{\text{5d9}}\,\,{\text{6s1}}$
The energy levels of ${\text{s}}$ (outer) and ${\text{d}}$(inner) are nearly identical. As a result, having four completely filled and two half-filled orbitals is more stable and energetically advantageous than having five fully filled and one empty orbital. As a result, the configuration.

Note:
Catalytic converters, laboratory devices, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewellery are all made of platinum. Since it is a heavy metal, exposure to its salts causes health problems; but, due to its corrosion resistance, metallic platinum has not been related to negative health effects.