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

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

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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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manish

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