* The atom becomes negatively charged. This is because electrons carry a negative charge, and adding more of them to the atom increases the overall negative charge.

* The atom becomes an anion. Anions are negatively charged ions, formed when an atom gains one or more electrons.

Here's a simple explanation:

Imagine an atom as a tiny ball with a certain number of positive and negative charges. Normally, these charges are balanced, and the atom is neutral. When the atom gains an electron, it gains an extra negative charge, making it more negative overall. This imbalance in charges makes the atom an anion.

For example, a chlorine atom (Cl) has 17 protons (positive charges) and 17 electrons (negative charges), making it neutral. When it gains an electron, it now has 17 protons and 18 electrons, giving it a net charge of -1. It is now a chloride ion (Cl⁻).

The gain of electrons can also affect the atom's chemical properties, making it more reactive or less reactive depending on the element and the number of electrons gained.