What is the minimum energy required to ionize a hydrogen atom in the n= 3 state? Chemistry The Periodic Table Periodic Trends in Ionization Energy 1 Answer Doc048 May 26, 2017 #2.42x10^(-16)J# Explanation: Use the Bohr Energy Equation for #n_i = 3 -> n_f = oo# #DeltaE_i# = -#A(1/n_f^2 - 1/n_i^2)# = #-2.18x10^(-18)J(1/oo^2 - 1/3^2)# = #-2.18x10^(-18)J(0 -0.111)J = 2.42x10^-19J# Answer link Related questions How does ionization energy relate to reactivity? What is ionization energy measured in? What are the first and second ionization energies? How does ionization energy increase? How does ionization energy change down a group? How do trends in atomic radius relate to ionization energy? Question #44238 Question #fbdfe Question #1a23b Question #d7de9 See all questions in Periodic Trends in Ionization Energy Impact of this question 16491 views around the world You can reuse this answer Creative Commons License