The -ve charged particles is called:

The correct option is Anion.

An atom or a group of atoms that has acquired a net electrical charge due to the loss or gain of one or more electrons is called an ion.

When an atom gains one or more electrons, it acquires a net negative charge because it now has more negatively charged electrons than positively charged protons in its nucleus. These negatively charged particles or ions are specifically referred to as anions.

For example, when a chlorine atom ($\text{Cl}$) gains an electron (${\text{e}}^{-}$), it forms a chloride ion (${\text{Cl}}^{-}$), which is an anion:
$\text{Cl}+{\text{e}}^{-}\to {\text{Cl}}^{-}$

Here is a quick breakdown of why the other options are incorrect:
Cation: This is a positively charged ion formed when an atom loses electrons.
Radical: This is an atom, molecule, or ion that has an unpaired valence electron, making it highly reactive, but it is not defined by having a negative charge.
Atom: This is the basic unit of a chemical element, which is electrically neutral as it contains an equal number of protons and electrons.