B, the opposing forces are the same, thus, the ball doesn't move back or forward.
Answer:
Alkanes, alkenes and alkynes are simple hydrocarbon chains with no functional groups. Alkanes are identified because the carbon chain has only single bonds. Alkenes have at least one double bond and alkynes have at least one triple bond. The most common alkyne is ethyne, better known as acetylene.
ANSWER: Increase
why? Because the number of C atoms in homologous series increases gradually.
