Question

question 25 of 28. why do elements in the same group tend to have similar chemical properties? a. they have the same number of electrons. b. they have the same number of protons. c. they have the same number of valence electrons. d. they have the same number of electron orbital shells.

Explanation:

Chemical properties depend on valence electrons. Elements in the same group have the same number of valence electrons, leading to similar properties.

Answer:

C. They have the same number of valence electrons.