Which group has greater steric hindrance?

[vetgirl1990]

Does an amino group or ethyl group have greater steric hindrance?
Is there a "rule" that I can follow to determine this?

 

[Bystander]

Rule 1: "Size." So, you tell me which is larger?

 

[vetgirl1990]

Rule 1: "Size." So, you tell me which is larger?

Well the molecular weight of CH2CH3 is 29g/mol, and NH2 is 16g/mol. Ethyl is larger, so I guess I have my answer then!