An angle of 200° is a/an angle.

Reflex angle

Explanation:

Angles that are greater than 180 degrees but less than 360 degrees have a special name: reflex angles.

Here, we see that 200 degrees is indeed between 180 and 360, which means it qualifies as a reflex angle.

The answer is thus reflex angle.

~ an aesthetics lover

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.