Unit 7: Bonding and Nomenclature

Front

What type of bond is formed between lithium and fluorine?

Back

Ionic bond: A bond formed when one atom transfers electrons to another, resulting in the attraction between oppositely charged ions.

Front

How many unshared pairs of electrons are present in a trigonal pyramidal molecule?

Back

1 unshared pair: In a trigonal pyramidal shape, there is one lone pair of electrons on the central atom.

Front

What is the formula for the compound formed by Cr³⁺ and O^2-?

Back

Cr₂O₃: The charges balance to form this compound, with two chromium ions for every three oxide ions.

Front

What is the molecular formula for phosphorus pentachloride?

Back

PCl₅: This molecule consists of one phosphorus atom bonded to five chlorine atoms.

Front

What is the correct chemical name for CuSO₄?

Back

Copper (II) sulfate: This name indicates that copper has a +2 oxidation state in this compound.

Front

What type of bond involves the sharing of electron pairs between atoms?

Back

Covalent bond: A bond formed when two atoms share one or more pairs of electrons.

Front

What is the shape of a molecule with four bonding pairs and one lone pair of electrons?

Back

Trigonal bipyramidal: The presence of one lone pair distorts the shape to a seesaw configuration.

Front

What is the significance of the Roman numeral in copper (II) sulfate?

Back

It indicates the oxidation state of copper, which is +2 in this compound.

Front

What is the formula for sodium chloride?

Back

NaCl: This is the formula for table salt, formed from sodium and chlorine.

Front

What type of bond is formed in a molecule of water (H₂O)?

Back

Polar covalent bond: The electrons are shared unequally between hydrogen and oxygen, resulting in a dipole.