atomic mass negative electrical charge number of neutrons full valence electron shells
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Neon (Ne), argon (Ar), and krypton (Kr) are in the same column on the Periodic Table of the Elements. What characteristic do these elements have in common?
Possibilities:
- atomic mass
- negative electrical charge
- number of neutrons
- full valence electron shells

full valence electron shells