Question

In Lutecium, the last electron filled in d subshell, even after it belongs to f block, why??

Answer 1

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Your question :

In Lutecium, the last electron filled in d subshell, even after it belongs to f block, why??

Answer :

Lanthanum electronic configuration = 1s2-2s2-2p6-3s2-3p6-3d10-4s2-4p6 -4d10-5s2-5p6-5d1-6s2
transition series, and the 5d orbitals start getting filled from lanthanum.......

And so, it has the configuration [Xe]5d1 6s2.......

The 4f orbitals get filled from the next element (cerium) only.....




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