Question

Question 20 of 25Why do elements in the same group have a similar reactivity?A. They all have the same boiling point.O B. They are all in the same period of the periodic table.C. They have the same number of valence electrons.O D. The elements all have the same number of neutrons.

Answer 1

C

Step-by-step explanation

The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.