Question

Fears of radiation exposure from normal use of such detectors are largely unfounded. identify reasons why 241am smoke detectors are perfectly safe. choose all that apply.

Answer 1

The reasons why  241am smoke detectors are perfectly safe is because;
(i)   The amount of americium is very little.
(ii)   The aluminium core is where the detector is hosted.
(iii)  The detector has a plastic cover.
(iv)   Radiation is limited in penetrating power.
(v)    There is a low number which is leaving the case.
(iv) ions get trapped by electrodes.