D And F Block Elements Question 12
Question 12 - 2024 (30 Jan Shift 1)
Diamagnetic Lanthanoid ions are:
(1) $Nd^{3+}$ and $Eu^{3+}$
(2) $La^{3+}$ and $Ce^{4+}$
(3) $Nd^{3+}$ and $Ce^{4+}$
(4) $Lu^{3+}$ and $Eu^{3+}$
Show Answer
Answer (2)
Solution
$Ce:[Xe] 4 f^{1} 5 d^{1} 6 s^{2} ; Ce^{4+}$ diamagnetic
$La:[Xe] 4 f^{0} 5 d^{1} 6 s^{2} ; La^{3+}$ diamagnetic