Using Bohr's equation for the energy levels of the electron in the Hydrogen atom, determine the energy in J of an electron in the n=4 level.
According to Boh'rs equation we can calculate the energy using this equation:
En = - 2.18 * 10⁻¹⁸ J / (n²)
So if we want to find the energy we only have to replace n by 4 and solve that calculation:
since n = 4
En = - 2.18 * 10⁻¹⁸ J / 4²
En = - 2.18 * 10⁻¹⁸ J / 16
En = -1.36 * 10⁻¹⁹ J
So the answer is option D
