why is isobutane nonpolar?for Biology i dont understand what my testbook is telling me and im just really confused a simple explanation would be perfect.
Indeed it is non polar.
Non polar molecules do not contain a dipole or lacking the ability to form a dipole.
It can also be defined as a nonionic compound; a compound that cannot dissociate into ions in a solution.
Since you are studying biology, we can limit the definitiion of polarity with its ability to be dissolved in a polar subtace for example water.
for example, fats and oils are not soluble in water because they are non polar. Isobutane cannot be dissolved in water therefore it is a non polar substance.
hope this helps :)