Chemistry: Unit 2: M7 & M8: Covalent and Ionic Bonds

The shape of a molecule whose central atom has four pairs of bonding electrons is ______.

• tetrahedral.

• linear.

• trigonal planar.

• trigonal pyramidal

The shape of a molecule that has two covalent single bonds and no lone pairs on the central atom is ______.

• tetrahedral.

• linear.

• trigonal planar.

• trigonal pyramidal

In naming ionic compounds, the cation is named first.

• True

• False

In naming a monatomic anion, the suffix -ide is used.

• True

• False

The prefix per- is used in naming the anion with the most oxygen atoms.

• True

• False

The anion that has the formula ClO2 − is called the __.

• chlorate ion

• perchlorate ion

• hypochlorite ion

• chlorite ion

What is the formula for magnesium hydrogen sulfite, which is made up of the ions Mg2+ and HSO3 − ?

• Mg(HSO3)2

• MgHSO3

• Mg2HSO3

• Mg2(HSO3)3

In what form do elements such as hydrogen, nitrogen, and oxygen normally occur?

• as molecules containing four atoms

• as single atoms

• as molecules containing three atoms

• as molecules containing two atoms

Four electrons are shared in a _____ covalent bond.

• Coordinate

• Single

• Triple

• Double

The oxyacid suffix for an acid that contains an anion ending in -ate is -ic.

• True

• False