Question

which statement is true about a polyatomic ion?
it forms metallic bonds with other ions.
it forms covalent bonds with other ions.
it is made of atoms that are covalently bonded together.
it has a charge that is distributed over only part of the ion.

Explanation:

多原子离子是由多个原子通过共价键结合在一起形成的离子。它与其他离子形成离子键而非金属键或共价键，其电荷是分布在整个离子上的。

Answer:

It is made of atoms that are covalently bonded together.