Question 1

When calcium and chlorine react, they form an ionic compound. What is its Lewis dot structure?

Accepted Answer

The answer of When calcium and chlorine react, they form...

Question 2

How many electrons are in the Lewis dot structure of O and S?

Accepted Answer

Oxygen (O) and sulfur (S) both belong to group 16 of the periodic table, which means they have six valence electrons each. The Lewis dot structure represents these valence electrons as dots around the symbol of the element.

Question 3

How many valence electrons are in the Lewis dot structures of B, Si, and As?

Accepted Answer

The answer of How many valence electrons are in the...

Question 4

Lewis structures with single lines indicate what kind of bonding?

Accepted Answer

Lewis structures with single lines represent covalent bonds, where two electrons are shared between atoms.

Question 5

What is the correct Lewis structure for ethyne, C₂H₂, also known by the common name acetylene?

Accepted Answer

Ethyne (acetylene) has a triple bond between the two carbon atoms, which is correctly represented in option D as H-C≡C-H.

Question 6

The simplest covalently bonded molecule is hydrogen. Which is the correct Lewis structure?

Accepted Answer

The simplest covalently bonded molecule, hydrogen (H2), is correctly represented by the Lewis structure D) H - H, where the dash (-) signifies a single covalent bond between the two hydrogen atoms, each sharing one electron to form a stable molecule.

Question 7

Which is the best Lewis structure for methane?

Accepted Answer

The answer of Which is the best Lewis structure for...

Question 8

Which is the best representation of a water molecule?

Accepted Answer

The answer of Which is the best representation of a...

Question 9

How is ethane best represented by a Lewis structure?

Accepted Answer

The answer of How is ethane best represented by a...

Question 10

Phosphine, PH₃, is structurally much like ammonia. Which of the following is the best Lewis structure of phosphine?

Accepted Answer

The answer of Phosphine, PH₃, is structurally much like ammonia....

Question 11

Hydrogen sulfide is considered the "rotten egg" gas, and has a structure much like water. Which of the following is its Lewis structure?

Accepted Answer

The answer of Hydrogen sulfide is considered the "rotten egg"...

Question 12

What is wrong with the Lewis structure: He=He?

Accepted Answer

Helium is a noble gas with a full outer electron shell, meaning it does not form bonds with other atoms, including another helium atom.

Question 13

What does the double line, which looks much like an equals sign, represent in Lewis structures?

Accepted Answer

The double line in Lewis structures represents a 4-electron double bond, indicating that two pairs of electrons are shared between two atoms.

Question 14

Which of the following choices is the best Lewis structure for ammonia?

Accepted Answer

The answer of Which of the following choices is the...

Question 15

Propane, C₃H₈, is best represented by which condensed Lewis structure?

Accepted Answer

The answer of Propane, C₃H₈, is best represented by which...

Question 16

Boron trifluoride, BF₃, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF₃?

Accepted Answer

The answer of Boron trifluoride, BF₃, is a corrosive material...

Question 17

What is the correct Lewis structure for methyl chloride, CH₃Cl?

Accepted Answer

The answer of What is the correct Lewis structure for...

Question 18

Bromine in the gaseous state is Br₂ and has a simple Lewis structure. What type of bonding will it have?

Accepted Answer

Bromine (Br2) in its gaseous state forms a diatomic molecule, where two bromine atoms share a pair of electrons through a single covalent bond, not an ionic bond.

Question 19

What is wrong with this Lewis structure for gaseous hydrogen chloride: H - Cl?

Accepted Answer

Hydrogen does not have lone pairs because it can only have a maximum of 2 electrons in its valence shell, which are used in the bond with chlorine. Chlorine, however, has three lone pairs (six electrons) in addition to the shared pair in the bond with hydrogen, which are not shown in the given structure.

Question 20

Draw for yourself the Lewis structure of ethene, C₂H₄, also called ethylene. How many double bonds does it have?

Accepted Answer

Ethene (C2H4) has a double bond between the two carbon atoms.

Quiz 5: Chemistry of Bonding: Structure and Function of Drug Molecules