Answer: (1) functional groups
Explanation:
Functional groups are specific group of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.
The compounds having similar molecular formula but different arrangement of atoms or groups in space are called isomers and the phenomenon is called as isomerism.
Butanal is 
and butanone is 
.
and are functional isomers which have same molecular formula , similar masses and same number of carbon atoms per molecule but different functional groups attached.
There are 4 signifigant figures in 235.5.
Melted rock and minerals under the earths crust are called magma
A silver atom has to lose only 1 electron to achieve a <span>pseudo-noble-gas electron configuration.</span>
Answer:
The volume of STP will be 0.03 plss mark me brainliest
