Elements are substances made of only one type of atom is true,
"S<span>cientists believe that solids are mostly open space" is the statement among the statements given in the question that is true. The correct option among all the options that are given in the question is the second option or option "B". I hope that this answer has actually come to your help.</span>
Answer:
The answer to your question is: the third option is correct.
Explanation:
"Alkenes" ________.
are reasonably soluble in water This option is incorrect, alkenes are insoluble in water.
are relatively polar compounds This option is wrong, alkenes are not polar molecules.
have lower boiling points than alcohols of similar molecular weight This option is true, alkenes have a lower boiling point than alcohols.
both have lower boiling points than alcohols of similar molecular weight and are relatively polar compounds. This option is incorrect because is combining true with false facts.