Many smoke detectors use americium-241 to detect very small particulates in the air. This is done by using a stream of radioactive particles that can be stopped by the small smoke particulate. Which type of radiation is MOST LIKELY used in a smoke detector, as
it can be stopped by something this small?

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

answeridentity;