The last set which is n=4 l=3 m=3 is a valid set
Complete Question
The complete question is shown on the first uploaded image
Answer:
The correct place to click on any of the double peak showing between 2500 and 3000
on the uploaded question
Explanation:
The group which is being highlighted is an Aldehyde functional group denoted by this structure (
)
This groups stretch on the infrared spectrometer gives two medium intensities peaks
Its stretch comes at 2820 - 2850
peak 1
and at 2720 - 2750
peak 2
So the correct click would be on any of the two peaks between 2500 - 3000
region
There are 3 atoms in 1 molecule of Co2.