Number of colourless lanthanoid ions among the following is __________. Eu^3+, Lu^3+, Nd^3+, La^3+, Sm^3+

La^+3-[ Xe] 4 f^0 Nd^+3-[ Xe] 4 f^3 Sm^+3-[ Xe] 4 f^5 Eu^+3-[ Xe] 4 f^6 Lu^+3-[ Xe] 4 f^14

Number of colourless lanthanoid ions among the followin... | (Chemistry) | DivineJEE

Exam

Chemistry

Number of colourless lanthanoid ions among the following is __________.

$\mathrm{Eu}^{3+}, \mathrm{Lu}^{3+}, \mathrm{Nd}^{3+}, \mathrm{La}^{3+}, \mathrm{Sm}^{3+}$

$\mathrm{La}^{+3}-[\mathrm{Xe}] 4 \mathrm{f}^0 \\$

$\mathrm{Nd}^{+3}-[\mathrm{Xe}] 4 \mathrm{f}^3 \\$

$\mathrm{Sm}^{+3}-[\mathrm{Xe}] 4 \mathrm{f}^5 \\$

$\mathrm{Eu}^{+3}-[\mathrm{Xe}] 4 \mathrm{f}^6 \\$

$\mathrm{Lu}^{+3}-[\mathrm{Xe}] 4 \mathrm{f}^{14}$

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