Consider the following statements:
Statement I:
Some rare earth elements are used in the manufacture of flat television screens and computer monitors.
Statement II:
Some rare earth elements have phosphorescent properties.
Which one of the following is correct in respect of the above statements?
✅ Statement I: Correct
Rare earth elements like europium, terbium, and yttrium are essential in flat TV screens and monitors due to their role in producing vibrant colors and enhancing display quality. ✅ Statement II: Correct
These elements exhibit phosphorescence—absorbing energy and slowly emitting light—which is key to their use in color reproduction and brightness in displays. Relationship:
Statement II explains why rare earth elements are crucial in displays, confirming the reason behind Statement I. Therefore, both statements are correct and related.