I am buying an Athena groupset for my Bianchi Impulso build. Their 34/50 chainset is out of stock. Could I make a 36/52 work? I don't really understand the difference.

Groupset includes:

Bottom Bracket Options
Campagnolo Power Torque Bottom Bracket English
Campagnolo Chorus Cassette 12-27
Campagnolo Athena Rear Derailleur
Campagnolo Athena Front Derailleur
Campagnolo Athena Ergo Levers - ALLOY
Campagnolo Athena D Skeleton Brakeset
Campagnolo Chorus 11 Speed Chain

Campagnolo Athena Alloy Groupset 2015 - Black | Merlin Cycles