Question

what is the energy associated with the 3rd energy shell of hydrogen atom ?​

Answer 1

E = ${-R_{H}}$ $\frac{1}{n^{2}}$

E = 2.18 × $10^{-18}$ × $\frac{1}{3^{2}}$

E = 0.242 × ${10^{-18}}$

E = 24.4 × ${10^{-20}}$