What Is The Difference Between A Monatomic Ion And A Polyatomic Ion

What is the difference between a polyatomic ion and a monatomic ion?

Thanks

Asked on by inquire123

1 Answer | Add Yours

sciencesolve's profile pic

sciencesolve | Teacher | (Level 3) Educator Emeritus

Posted on

The prefix "mono" suggests to you that a monoatomic ion consists of only one atom.

Example of monoatomic ions: `Na^(1+), H^+`

The prefix "poly" suggests to you that a polyatomic ion consists of  more than only one atom, like 2,3, 4 or more.

Take as example the hydroxyl ion `OH^-` that consists of 2 atomes, one oxygen atom and one hydrogen atom.

The acetate ion `CH_3COO` contains 7 atoms, 2 Carbons, 3 Hydrogens and 2 Oxygens.

Hence, a monoatomic ion contains only one kind of atom while polyatomic ion contains more than one atom.

We’ve answered 318,959 questions. We can answer yours, too.

Ask a question