Chemistry - GENERAL CHEMISTRY Question with Solution | TestHub

According to Aufbau principle electron are filled in various atomic orbital in the increasing order of energy$1\mathrm{s}<2\mathrm{s}<2\mathrm{p}<3\mathrm{s}<3\mathrm{p}<4\mathrm{s}<3\mathrm{d}<4\mathrm{p}<5\mathrm{s}<4\mathrm{d}<5\mathrm{p}<6\mathrm{s}<4\mathrm{f}<5\mathrm{d}<6\mathrm{p}<7\mathrm{s}$.