Exploring Lewis Dot Structures for Ionic Compounds

What is the primary benefit of using Lewis dot diagrams for compounds?

• They illustrate the possible arrangement of atoms within a compound.

• They display the physical state of the compound.

• They show the atomic number of each element.

• They indicate the melting point of the compound.

In a Lewis dot diagram for an ionic compound, what does the arrow represent?

• The bond between two atoms.

• The transfer of electrons from one atom to another.

• The energy level of the electrons.

• The sharing of electrons between atoms.

When drawing the Lewis diagram for NaCl, what charge does the sodium ion have after losing an electron?

• -2

• -1

• +2

• +1

What must be included in the Lewis diagram for an ionic compound to get full credit on an exam?

• Only the valence electrons.

• Brackets and charges.

• The atomic number.

• The molecular weight.

In the example of potassium fluoride, how many valence electrons does fluorine have before bonding?

• 7

• 6

• 5

• 8

What is the charge on the barium ion after it loses two electrons in the formation of barium sulfide?

• +1

• -2

• -1

• +2

How many valence electrons does sulfur have before bonding in barium sulfide?

• 4

• 6

• 7

• 5

In the advanced example, how many valence electrons does aluminum have before bonding?

• 2

• 4

• 3

• 1

What is the correct way to represent three bromide ions bonded to one aluminum ion?

• AlBr3

• Al(Br)3

• 3AlBr

• Al + 3Br-

Why is it incorrect to use a subscript to represent multiple bromide ions in the advanced example?

• It implies a different element.

• It shows an incorrect charge.

• It indicates a covalent bond.

• It suggests that the bromides are bonded to each other.