Write the electronic configurations of the elements with the atomic numbers, 61, 91, 101, and 109.
61 : [Xe]54 4f5 5d0 6s2
91 : [Rn]86 5f2 6d1 7s2
101 : [Rn]86 5f13 5d0 7s2
109: [Rn]86 5f14 6d7 7s2
