Answer
Option B. Nitrogen and phosphorus
Work Step by Step
This question has to do with the location of the elements in the periodic table. Elements in the same groups share many properties because they have similar structures. This is why nitrogen and phosphorus (both in group 5A) have the most similar chemical properties.Sodium and chlorine are very far from each other in the periodic table, so they display very different properties. Boron and oxygen are also very different.
