Question

its time for the unit exam. this is your opportunity to show how much you have gained from
if you dont feel ready, you may want to stop and clarify anything you do not understand. it may
over any notes you have taken and review the key terms.
good luck!
note: to answer some of the questions, it may help to reference a periodic table .
what is the correct definition of a polyatomic ion?
an ion with a positive charge
an ion with a negative charge
an ion made up of two or more atoms ionically bonded
an ion made up of two or more atoms covalently bonded

Explanation:

A polyatomic ion is defined based on its structure. An ion with a positive charge is a cation. An ion with a negative charge is an anion. Ions made up of two or more atoms ionically bonded would be part of an ionic compound's structure in a different context. A polyatomic ion specifically has atoms held together by covalent bonds while having an overall charge.

Answer:

an ion made up of two or more atoms covalently bonded