Question

What is the electron configuration for francium?

Answer 1

Francium:

• Francium is an element having an atomic number $87$ and an atomic symbol $\mathrm{Fr}$.
• It is an radioactive element.
• It belongs to Group-$1$ and the seventh period.

Electronic configuration of Francium:

• The electronic configuration of Francium is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}4{\mathrm{s}}^{2}3{\mathrm{d}}^{10}4{\mathrm{p}}^{6}5{\mathrm{s}}^{2}4{\mathrm{d}}^{10}5{\mathrm{p}}^{6}6{\mathrm{s}}^{2}4{\mathrm{f}}^{14}5{\mathrm{d}}^{10}6{\mathrm{p}}^{6}7{\mathrm{s}}^1$
• The electronic configuration of Francium can be represented as $\left[\mathrm{Rn}\right]7{\mathrm{s}}^1$