Question

How do you determine the electronic configuration of $"\mathrm{W}"$

Answer 1

Electronic configuration:

1. An element's electron configuration describes how electrons are arranged in their atomic orbitals and where it belongs in the periodic table.
2. The given element $"\mathrm{W}"$stands for Tungsten which is a metal with an atomic number$=74$.
3. Because it has a huge atomic number, we must find the noble gas that is the closest to it in order to figure out its configuration.
4. Xenon$\left(\mathrm{Xe}\right)$ is the closest noble gas to tungsten with an atomic number$=54$.
5. The difference in the electrons of both the elements is of $20$ electrons. So to get the electronic configuration of tungsten we need to add 20 electrons to the electronic configuration of Xenon.
6. Electronic configuration of Xenon$=1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}4{\mathrm{s}}^{2}3{\mathrm{d}}^{10}4{\mathrm{p}}^{6}5{\mathrm{s}}^{2}4{\mathrm{d}}^{10}5{\mathrm{p}}^6$.
7. Electronic configuration of Tungsten is$\left[\mathrm{Xe}\right]4f^{14}5d^{4}6s^2$.