Chemistry 2110 Hw

Question

In Bohr's model of the hydrogen atom, which is no longer the standard for understanding the atom, the electron revolves around the nucleus in one of an array of available orbits. Each orbit is assigned a quantum number, n, starting with n = 1 for the orbit closest to the nucleus. The energy of an electron is inversely proportional to n squared, n². Calculate the energy of an electron in the n =3 orbit.

Answer 1

E_n = E₁/n² E₁ is the ground state energy (or I.E) of a hydrogen atom. The energy is a negative number, so higher energies are less negative. It requires work to separate the electron from the atom (lift it out of the potential well)

-2.18 x 10^-18 J = E₁ Check in textbook.