Question

Why do elements that are in the same group of the periodic table share similar properties?
-They all have the same atomic mass
-They are all metals
-They are all very reactive with other elements
-They all have the same number of electrons in the outer shell

Answers

GPT-4o mini
Elements that are in the same group of the periodic table share similar properties primarily because **they all have the same number of electrons in their outer shell**. This is known as their valence electrons, which determine how an element behaves chemically and how it interacts with other elements. The similar valence electron configuration leads to similar chemical properties and reactivity among the elements in the same group.