The ' f ' orbitals are half and completely filled, respectively in lanthanide ions [Given : Atomic no. Eu , 63 : Sm , 62 : Tm , 69 ; Tb , 65 ; Yb , 70 ; Dy , 66 ]

Question

TestHub · Accepted Answer

Ion Electronic configuration Eu 2 + 4 f 7 Tm 2 + 4 f 13 Sm 2 + 4 f 6 Tm 3 + 4 f 12 Tb 4 + 4 f 7 Yb 2 + 4 f 14 Dy 3 + 4 f 9 Yb 3 + 4 f 13 Hence, the ions with half and completely filled configurations are Tb 4 + and Yb 2 +

Ion	Electronic configuration
${Eu}^{2 +}$	$4 f^{7}$
${Tm}^{2 +}$	$4 f^{13}$
${Sm}^{2 +}$	$4 f^{6}$
${Tm}^{3 +}$	$4 f^{12}$
${Tb}^{4 +}$	$4 f^{7}$
${Yb}^{2 +}$	$4 f^{14}$
${Dy}^{3 +}$	$4 f^{9}$
${Yb}^{3 +}$	$4 f^{13}$

Chemistry - f-block Question with Solution | TestHub

Options:

Doubts & Discussion