Is formula unit the same as molecule?

A molecule is composed of two or more elements that are covalently bonded. A formula unit indicates the lowest whole number ratio of ions in an ionic compound.

Is NaCl a molecule and a compound?

The most common example of an ionic compound is sodium chloride NaCl, better known as table salt. Unlike covalent compounds, there is no such thing as a molecule of an ionic compound. The chemical formula NaCl specifies one formula unit of this compound.

Is HCl a molecule or formula unit?

hydrogen chloride (HCl), a compound of the elements hydrogen and chlorine, a gas at room temperature and pressure. A solution of the gas in water is called hydrochloric acid.

What is a molecule unit?

molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

Why is NaCl considered a formula unit rather than just a chemical formula?

There is no discrete bonding of a particular sodium ion to a specific chloride ion. So the formula for sodium chloride is expressed as the smallest whole number ratio between the Na and Cl ions which is 1:1 for sodium chloride. So, NaCl is also a formula but not a molecular formula.

Is NaCl ionic or molecular?

Covalent Bonding. Ionic compounds, such as sodium chloride (NaCl), are formed by a transfer of electrons that creates ions. Ions exert electrostatic force on each other, which forms ionic bonds. The hydrogen and oxygen atoms in a water molecule, however, are bonded by sharing electrons rather than by transferring them.

Is hydrogen chloride a molecule?

Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom H and a chlorine atom Cl connected by a polar covalent bond. The chlorine atom is much more electronegative than the hydrogen atom, which makes this bond polar.

Is a formula unit a particle?

The representative particle of an ionic compound is the formula unit. A formula unit uses a formula to calculate the basic whole number ratio of the ions in an ionic compound.

What is the formula unit of NaCl?

The formula of Sodium chloride is NaCl. The atomic mass of sodium is 22.99g/mol, and the atomic mass of chlorine is 35.45gmol. Thus, the formula mass of Sodium chloride is 22.99 + 35.45 = 58.44gmol.

Why is NaCl considered a formula unit rather than just a chemical formula quizlet?

Why is NaCl considered a formula unit rather than just a chemical formula? NaCl is the lowest whole-number ratio of ions in the ionic compound sodium chloride. Most ionic compounds are crystalline solids at room temperature. Ionic compounds generally have high melting points.