Can you answer these quiz questions?

D Question 4 Which halogen forms the weakest bond to carbon? O Br OI OF D Question 5 What is the IUPAC name of the compound below? CH3 CH3 CH;CH,CH,CCH,CH,CHCHCH; CH(CH;)2 Cl O 8-chloro-4-isopropyl-4,7-dimethylnonane O 2-chloro-3,6,7-trimethyl-6-propyloctane 6-sec-butyl-2-chloro-3,6-dimethyloctane O 2-chloro-6-isopropyl-3,6-dimethylnonane D Question 6 Identify the functional group in the boxed area. CO,H aspim O CHA O ketone O carboxylic acid O ester O ether