MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following lanthanide ions do not exhibit color? |
| A. | Lu<sup>+3</sup> and Ln<sup>+3</sup> |
| B. | Lu<sup>+2</sup> and Ln<sup>+2</sup> |
| C. | Ce<sup>+3</sup> and Ce<sup>+3</sup> |
| D. | Pr<sup>+4</sup> and Ce<sup>+4</sup> |
| Answer» B. Lu<sup>+2</sup> and Ln<sup>+2</sup> | |