A charged particle made up of several non-metallic atoms joined together is a (n) Select one:

a. covalent ion

b. polyatomic ion

c. multivalent ion

d. electron ion

It would be B. A polyatomic ion. Poly means many, while atomic refers to atoms more specifically the nature or category of these atoms is that they are non metallic ones, or basically nonmetal atoms. All of these nonmetallic atoms are joined together through covalent bonds and altogether they possess a unique charge. An example of a polyatomic ion would be sulphate or (SO4) ^-3.