As an atom gains extra electrons, it also changes size. How does the size change, and what causes the change?

The atom gets smaller because there are more negatively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets smaller because there are more negatively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets smaller because there are more positively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets smaller because there are more positively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets larger because there are more negatively charged subatomic particles spread out around the nucleus.

The atom gets larger because there are more negatively charged subatomic particles spread out around the nucleus.

The atom gets larger because there are more positively charged subatomic particles spread out around the nucleus.

The atom gets larger because there are more positively charged subatomic particles spread out around the nucleus.

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Electron: A negatively charged particle found circling or orbiting an atomic nucleus. An electron, like a proton is a charged particle, although opposite in sign, but unlike a proton, an electron has negligible atomic mass. Electrons contribute no atomic mass units to the total atomic weight of an atom.\anation:

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