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Atomic number = 61, Promethium![[Xe]^{54}4f^{5}5d^{0}6s^{2}](https://learn.careers360.com/latex-image/?%5BXe%5D%5E%7B54%7D4f%5E%7B5%7D5d%5E%7B0%7D6s%5E%7B2%7D)
the electronic configuration is
atomic number = 91, protactinium![[Rn]^{86}5f^{2}6d^{1}7s^{2}](https://learn.careers360.com/latex-image/?%5BRn%5D%5E%7B86%7D5f%5E%7B2%7D6d%5E%7B1%7D7s%5E%7B2%7D)
the electronic configuration is
Atomic number = 101, Mendelevium![[Rn]^{86}5f^{13}6d^{0}7s^{2}](https://learn.careers360.com/latex-image/?%5BRn%5D%5E%7B86%7D5f%5E%7B13%7D6d%5E%7B0%7D7s%5E%7B2%7D)
the electronic configuration is
Atomic number = 109, Meitnerium![[Rn]^{86}5f^{14}6d^{7}7s^{2}](https://learn.careers360.com/latex-image/?%5BRn%5D%5E%7B86%7D5f%5E%7B14%7D6d%5E%7B7%7D7s%5E%7B2%7D)
the electronic configuration is