What is the term for the part that remains after a hydrogen atom is removed from a benzene molecule?
A) alkyl group
B) benzyl group
C) ethyl group
D) phenyl group
E) none of the above
Question 2
What is the term for the mathematical formula for calculating the wavelength of light emitted
from an excited hydrogen atom when the electron drops to the second energy level?
A) Balmer formula
B) Bohr formula
C) Einstein equation
D) Rydberg equation
E) none of the above