Why is it important not to break or crush mercury-containing lamps in the laboratory?

• A. Breaking the lamps will neutralize the mercury safely.
• B. The lamps may emit dangerous ultraviolet radiation.
• C. The glass fragments can cause electrical fires.
• D. Mercury powder may be released, posing a health hazard.

Answer: (D)

Verified step by step guidance

1. Understand that mercury-containing lamps contain elemental mercury, which is toxic and hazardous to health.
2. Recognize that breaking or crushing these lamps releases mercury in the form of vapor or fine powder into the environment.
3. Know that mercury vapor is harmful when inhaled, as it can cause serious neurological and respiratory problems.
4. Be aware that the glass fragments themselves are not the primary hazard, but the mercury contamination they carry is dangerous.
5. Therefore, it is important to handle these lamps carefully and avoid breaking them to prevent mercury exposure and contamination.