3.5-Names and Formulas of Compounds - 1

An ion that consists of a single atom with a charge is called a:

• polyatomic ion

• monoatomic ion

• complex ion

• molecular ion

Main-group metals form positive ions called:

• anions

• isotopes

• cations

• radicals

Nonmetals gain electrons to form negative ions called:

• isotopes

• anions

• cations

• radicals

The charge of nonmetal anions is predicted using the formula: charge =

• 2n - 10

• group number - 18

• atomic number - 8

• mass number - 20

The Stock system uses ____ to indicate the charge of metal ions with more than one charge:

• letters

• Roman numerals

• superscripts

• subscripts

The name of a main-group metal ion is the element name followed by the word:

• atom

• ion

• cation

• metal

Nonmetal ions are named by changing the end of the element name to:

• -ium

• -ous

• -ide

• -in

Fe²⁺ is named ____ in the Stock system:

• Iron (I)

• Iron (II)

• Iron (III)

• Iron (IV)

Fe³⁺ is named ____ in the Stock system:

• Iron (I)

• Iron (II)

• Iron (III)

• Iron (IV)

Cu⁺ is named ____ using the Stock system:

• Copper (II)

• Copper (I)

• Copper (III)

• Copper (IV)