What are possible components of ionic compounds? Check all that apply.
a metal and a nonmetal
2 metals
a metal and a polyatomic anion
a polyatomic cation and a metal

What are ionic compounds

These are compounds that comprises of ions and they are bond together by ionic bonds or better still electro static forces.

In summary they are composed of two types of ion

1. Positively charges ions also called cations

2. Negatively charges ions also called anions

Properties Shared by Ionic Compounds

1. High melting points and high boiling points. ...

2. higher enthalpies of fusion and vaporization than molecular compounds

3. They conduct electricity when they are dissolved in water. ...

3 .They're good insulators.

From the given options the corrections ones are

1 . A polyatomic cation and a metal

2. A metal and a polyatomic anion

3. A metal and a nonmetal

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pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation: