Question

Which Orbital has the highest energy and why

Answer 1

Orbital Energy:

Orbital energy is the energy required to take an electron in an orbital to infinity, or the energy released when an electron is introduced to that orbital from infinity. The principal quantum number determines an Orbital's energy.

The highest Orbital Energy is:

The energy of electrons in the p orbital is higher than that of electrons in the $\mathrm{s}$ Orbital at any given primary energy level. The $\mathrm{d}$ Orbital electrons will have higher energy than the $\mathrm{p}$ Orbital electrons. Likewise, the $\mathrm{f}$ Orbital will have greater energy than the $\mathrm{d}$ Orbital. The energy of an Orbital is enhanced by increasing the number of primary energy levels associated with it. The energy of a $2\mathrm{s}$ Orbital is larger than that of a $1\mathrm{s}$ Orbital, for example. Similarly, the energy of the $3\mathrm{s}$ Orbital is higher than that of the $2\mathrm{s}$ Orbital. The energy of electrons in the $\mathrm{p}$ Orbital is higher than that of electrons in the $\mathrm{s}$ Orbital at any given primary energy level. The $\mathrm{d}$ Orbital electrons will have higher energy than the $\mathrm{p}$Orbital electrons. Likewise, the $\mathrm{f}$ Orbital will have greater energy than the $\mathrm{d}$Orbital.