Q40 · CSIR-NET Chemistry, June 2018
Paper: CSIR-NET June 2018 · Subject: Inorganic Chemistry · Chapter: Lanthanides and Actinides · Topic: Lanthanides & Actinides – General · Marks: 2 · Difficulty: Medium
Match fluorescence colours given in column A with lanthanide ions given in Column B | Column A | Column B |
|---|
| (i) Pink | (a) Sm(III) |
| (ii) Red | (b) Tb(III) |
| (iii) Green | (c) Eu(III) |
| (iv) Blue | (d) Tm(III) |
(a)(i)-(a); (ii) - (c); (iii)-(b); (iv) - (d)
(b)(i)-(d); (ii)-(c); (iii)-(b); (iv) - (a)
(c)(i)-(a); (ii)-(b); (iii) - (c); (iv)-(d)
(d)(i)-(c); (ii)-(b); (iii)- (d); (iv)-(a)
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
Sm³⁺ fluoresces pink-orange, Eu³⁺ red, Tb³⁺ green and Tm³⁺ blue. (i)-(a), (ii)-(c), (iii)-(b), (iv)-(d) (a).
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