Ionic Compounds and Metals

What is the overall charge of a balanced atom?

The overall charge is ZERO; protons (+) = electrons (-).

What does it mean for an atom to be stable?

An atom is stable when its valence electron orbital is FULL.

What is the Octet Rule?

The Octet Rule states that an atom is stable when its valence orbital holds 8 electrons.

How many valence electrons does Group 1 have?

Group 1 has 1 valence electron.

What is a cation?

A cation is an atom that has lost electrons and now has a POSITIVE charge.

What is an anion?

An anion is an atom that has gained electrons and now has a NEGATIVE charge.

What is ionic charge?

Ionic charge is the resulting charge on an atom once its valence electron orbital is full.

What is the charge of Group 2 elements?

Group 2 elements have a charge of +2.

What do electron dot structures represent?

Electron dot structures show the valence electrons of atoms.

What happens to elements when they lose electrons?

Elements become CATIONS when they lose electrons.

What happens to elements when they gain electrons?

Elements become ANIONS when they gain electrons.

What is an ionic compound?

An ionic compound is composed of cations (metals) and anions (nonmetals) held together by ionic bonds.

What is the significance of metallic bonds?

Metallic bonds are the forces of attraction between free-floating valence electrons and positively charged metal ions.

What are alloys?

Alloys are mixtures of 2 or more elements, at least one of which is a metal, and are usually stronger than their components.

What is the charge of Group 17 elements?

Group 17 elements have a charge of -1.

What is the formula for the ionic bond between potassium and oxygen?

The formula is K2O.

What is the name for MgCl2?

The name is magnesium chloride.

How many lithiums are needed to create a balanced ionic bond with nitrogen?

Three lithiums are needed to create a balanced ionic bond with nitrogen, forming Li3N.

What is a polyatomic ion?

A polyatomic ion is a compound made of more than one atom bonded together with an overall charge.

What is the charge of oxygen in ionic compounds?

Oxygen typically has a charge of -2.

What is the chemical name for CuF2?

The chemical name is copper(II) fluoride.

What is the charge of iron in FeCl2?

Iron has a charge of +2 in FeCl2.

What is the charge of aluminum in AlN?

Aluminum has a charge of +3 in AlN.