Write the electronic configuration of the elements with atomic number 61,91, 101 and 109.
Promethium(Pm) has atomic number 61. Hence electronic configuration of Promethium is [Xe]544f5 5d0 6s2
Protactium(Pa) has atomic number 91. Hence electronic configuration of Protactium is [Rn]86 5f2 6d1 7s2
Mendelevium(Md) has atomic number 101. Hence electronic configuration of Mendelevium is [Rn]86 5f14 6d0 7s2
Meitnerium(Mt) has atomic number 109. Hence electronic configuration of Meitnerium is [Rn]86 5f14 6d7 7s2