# 8.34 Write the electronic configurations of the elements with the atomic numbers 61, 91, 101, and 109.

Atomic number = 61, Promethium
the electronic configuration is $[Xe]^{54}4f^{5}5d^{0}6s^{2}$

atomic number = 91, protactinium
the electronic configuration is $[Rn]^{86}5f^{2}6d^{1}7s^{2}$

Atomic number = 101, Mendelevium
the electronic configuration is $[Rn]^{86}5f^{13}6d^{0}7s^{2}$

Atomic number = 109, Meitnerium
the electronic configuration is $[Rn]^{86}5f^{14}6d^{7}7s^{2}$

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