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Org chem help

I don’t get this q and why only C is correct and not D because doesn’t the bond angle around N form 120°??IMG_2134.jpeg
(edited 1 year ago)
Nitrogen has a lone pair which means there are 3 bonding pairs and 1 lone pair, so it's trigonal pyramidal with a bond angle of 107
the carbonyl C=O double bond will make the molecule planar, giving angle of 120, nitrogen has 3 bonding pairs and one lone pair so it will be based on tetrahedral geometry.

https://www.science-revision.co.uk/A-level_shapes_finding_the_lonepair.html

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