Question

Some substances that show fluorescence are mentioned here. Pick the false one?

• A. Fluorescein
• B. Naphthacene shows green fluorescence
• C. Anthracene shows a violet fluorescence
• D. Radium

Answer 1

The correct option is D Radium

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence.

Various substances that show fluorescence are-

• Fluorescein
  
• Naphthacene shows green fluorescence
  
• Anthracene shows a violet fluorescence
  
• Fishes also show Fluorescence

Hence option D is false one as Radium doesn't show fluorescence.