Class on Electric Current 11 July

\(a^2 = b_0\) \(r_n = \left ( \frac{n^2}{Z} \right ) a_0\), where \(a_0\) = 0.529 \(A°\) \( K.E. = \left( \frac{Z^2}{n^2} \right )2.18 \times 10^{-18} J.atom^{-1}\)