Which of the following groups is considered a weak -I group?
Practice Questions
Q1
Which of the following groups is considered a weak -I group?
-NO2
-CN
-F
-COOH
Questions & Step-by-Step Solutions
Which of the following groups is considered a weak -I group?
Step 1: Understand what a weak -I group is. A weak -I (inductive) group is a substituent that pulls electron density away from the rest of the molecule but not very strongly.
Step 2: Identify the groups mentioned in the question: -F (fluorine), -NO2 (nitro), and -CN (cyano).
Step 3: Compare the strength of these groups as -I groups. -NO2 and -CN are strong -I groups because they pull electron density away very effectively.
Step 4: Recognize that -F is less effective at pulling electron density compared to -NO2 and -CN, making it a weak -I group.
Step 5: Conclude that among the groups listed, -F is the one considered a weak -I group.
