What happens to the electrons as the atoms get bigger?

As atoms get bigger, they have more electrons due to the increased number of protons in the nucleus. These additional electrons occupy higher energy levels or orbitals that are farther from the nucleus, resulting in a larger atomic radius. The increased distance from the nucleus leads to a weaker attraction between the nucleus and the outermost electrons, making them more loosely bound and influencing the atom's chemical properties. Additionally, electron-electron repulsion in the outer shells can lead to variations in reactivity across different elements.