Name the following compound
CH 3 – CH 2 – CH = CH – CH 2 – CH 3

hex-3-ene

remember the least number rule and since the double bond lies at 3rd C-atom from either ways, the compound is named hex (six carbon atoms) -3(position of double bond)-ene (primary suffix for unsaturated organic compound where any two carbons have double bond). hex-3-ene.

if you have any doubt, please feel free to ask :-))

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.