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- Write the electronic configuration of the elements with the atomic numbers 61, 91, 101 and 109
. Write the electronic configuration of the elements with the atomic numbers 61, 91, 101 and 109
Best Answer
Promethium or Pm(Z = 61) = [Xe] 4f55d06s2
Protactinium or Pa(Z = 91) = [Rn] 5f2 6d1 7s2
Mendelevium or Md(Z = 101) = [Rn] 5f136d0 7s2
Meitnerium or Mt(Z = 109) = [Rn] 5f146d77s2.
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