DE_CHEM_3.3 - Covalent Bonding Final

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When two atoms share four electrons with one another, what type of bond do they form?

a double ionic bond

a single ionic bond

a double covalent bond

a single covalent bond

A student states that non-metal atoms share their core electrons when they form covalent bonds. What is wrong with this statement?

Atoms share core electrons when they form ionic bonds.

Atoms do not share electrons during covalent bonding.

Atoms share their valence electrons, not their core electrons.

Non-metal atoms do not form covalent bonds.

What type of compound is composed of covalently bonded atoms and has a high melting point?

simple solid compound

complex solid compound

simple molecular compound

complex molecular compound

Explain why noble gases, like Neon, are considered nonreactive.

Which of the following substances would you expect to have a low melting point?

aluminum chloride

silicon dioxide

carbon dioxide

sodium chloride

Draw the Lewis dot structure for a molecule of ethyne, C₂H₂.

How many electrons are shared when two atoms form a triple bond?

2

3

6

8

Given their electronegativity values shown in the periodic table, which pair of atoms form a covalent bond?

O and Cl

Al and F

F and Li

Mg and O

A student states that nonmetal atoms form covalent bonds by gaining electrons until they have eight valence electrons. What is wrong with this statement?

Nonmetal atoms do not ususally form covalent bonds.

Covalent bonds form between atoms that already have eight valence electrons.

Nonmetal atoms form bonds until they have six valence electrons.

Covalent bonds form when atoms share electrons.

Label each section on this electronegativity chart.

One way that atoms can join to form compounds is through the formation of covalent bonds.
Identify the type of element whose atoms tend to form covalent bonds.
Describe what happens to electrons during the formation of covalent bonds.
State the octet rule.
Draw a Lewis structure for a molecule of oxygen difluoride, OF2OF2, and explain how the covalent bonds in the molecule relate to the octet rule.

When two atoms share four electrons with one another, what type of bond do they form?

a double ionic bond

a single ionic bond

a double covalent bond

a single covalent bond

A student states that non-metal atoms share their core electrons when they form covalent bonds. What is wrong with this statement?

Atoms share core electrons when they form ionic bonds.

Atoms do not share electrons during covalent bonding.

Atoms share their valence electrons, not their core electrons.

Non-metal atoms do not form covalent bonds.

What type of compound is composed of covalently bonded atoms and has a high melting point?

simple solid compound

complex solid compound

simple molecular compound

complex molecular compound

Which of the following substances would you expect to have a low melting point?

aluminum chloride

silicon dioxide

carbon dioxide

sodium chloride

How many electrons are shared when two atoms form a triple bond?

2

3

6

8

Given their electronegativity values shown in the periodic table, which pair of atoms form a covalent bond?

O and Cl

Al and F

F and Li

Mg and O

A student states that nonmetal atoms form covalent bonds by gaining electrons until they have eight valence electrons. What is wrong with this statement?

Nonmetal atoms do not ususally form covalent bonds.

Covalent bonds form between atoms that already have eight valence electrons.

Nonmetal atoms form bonds until they have six valence electrons.

Covalent bonds form when atoms share electrons.