In f-block elements,which orbitals are progre | vedclass

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(B) The general electronic configuration of $f$-block elements is $(n-2)f^{0-14} (n-1)d^{0-1} ns^2$. Lanthanoids involve the filling of $4f$ orbitals,

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$4f$ and $5f$

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(B) The general electronic configuration of $f$-block elements is $(n-2)f^{0-14} (n-1)d^{0-1} ns^2$. Lanthanoids involve the filling of $4f$ orbitals,with the general configuration $[Xe] 4f^{1-14} 5d^{0-1} 6s^2$. Actinoids involve the filling of $5f$ orbitals,with the general configuration $[Rn] 5f^{1-14} 6d^{0-1} 7s^2$. Therefore,$4f$ and $5f$ orbitals are progressively filled in $f$-block elements.

In $f$-block elements,which orbitals are progressively filled by electrons?

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