Investigation 3

The ions in most all ionic compounds are organized into a

• random form

• electron dot form

• polyatomic ion form

• crystal form

Bonding in molecules or ions that cannot be correctly represented by a single Lewis structure is

• polyatomic

• resonance

• single bonding

• double bonding

The electrons involved in the formation of a chemical bond are called

• dipoles

• s electrons

• excited electrons

• valence electrons

If two covalently bonded atoms are identical, the bond is

• nonpolar covalent

• polar covalent

• dipole covalent

• coordinate covalent

Which of the following is not an example of a molecular formula?

• H₂O

• B

• NH₃

• O₂

The electron configuration of nitrogen is 1s²2s²2p³. How many more electrons does nitrogen need to satisfy the octet rule?

• 1

• 3

• 5

• 8

In drawing a Lewis Structure, each nonmetal atom except hydrogen should be surrounded by

• 2 electrons

• 4 electrons

• 8 electrons

• 10 electrons

To draw a Lewis Structure, one must know the

• number of valence electrons in each atom

• atomic mass of each atom

• bond length of each atom

• ionization energy of each atom

The lattice energy is a measure of the

• strength of an ionic bond

• strength of a metallic bond

• strength of a covalent bond

• net charge on a crystal

How many extra electrons are in the Lewis Structure of the phosphate ion, PO₄^3-?

• 0

• 2

• 3

• 4