Naming and Writing Formulas for Molecular+ Ionic Compounds, A+B

Ionic compounds generally form when ____________ and ________________ react with each other.

• nonmetals and nonmetals
• metals and metals
• metals and nonmetals
• polyatomic elements & nonmetals

Metals tend to _____ electrons to form _______; nonmetals tend to _____ electrons to form ________.

• lose, cations ;   lose, anions
• gain, cations ;    lose, anions
• gain, anions ;    gain, cations
• lose, cations ;     gain, anions

The purpose of bonding for most elements is to achieve greater stability and to have a complete ______ of electrons in the outermost energy level.

• pair
• nucleus
• octet
• molecule

How many valence electrons are in an atom of phosphorus (P)?

• 5
• 4
• 3
• 2

How many valence electrons are in an atom of potassium (K)?

• 4
• 3
• 2
• 1

How many valence electrons are in an atom of tungsten (W), atomic number 74?

• 4
• 3
• 2
• 1

What is the name of PBr₃

• phosphorus tribromide

• phosphorus bromide

• phosphorus (III) bromide

• phosphorus bromine

What is the name of FeO?

• iron(III) oxide

• iron(II) oxide

• iron(III) oxygen

• iron oxide

What is the name for P₂O₅?

• phosphorus pentoxide

• diphosphorus pentoxide

• biphosphorus oxide

• phosphorus oxide

What is the name for SO₂?

• sulfur dioxide

• sulfur (II) oxide

• sulfur oxygen

• sulfur oxide