Which atom has the smallest number of neutrons?
A) carbon-14
B) nitrogen-14
C) oxygen-16
D) fluorine-19
E) neon-20
Question 2
The formula of nitrobenzene is C6H5NO2. The molecular weight of this compound is ________ amu.
A) 107.11
B) 43.03
C) 109.10
D) 123.11
E) 3.06