CHEMISTRY · Single correct · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends
Problem
Consider the Period 2 elements boron (B), carbon (C), nitrogen (N), and oxygen (O). Which ordering ranks them from the most exothermic (most negative) electron affinity to the least exothermic (least negative or positive)?
(a) O>N>C>B
(b) C>O>N>B
(c) O>C>B>N
(d) N>O>C>B