Bonding and formula writing Review

What is the formula for the ionic compound iron (III) oxide?

• Fe₃O₂

• Fe₂O₃

• FeO

• Fe₆O₃

• Fe₂O

Which of following are properties of ionic bonds? (YOU MAY SELECT MORE THAN ONE ANSWER)

• High melting point

• Low melting point

• Solid at room temperature

• Gas at room temperature

• Conducts electricity when dissolved in water

What charge will bromine form when becoming an ion?

• 1+

• 1-

• 7+

• 7-

• 0

What charge will barium (Ba) form when becoming an ion?

• 6+

• 6-

• 2+

• 2-

• 0

How many valence electrons does sulfur have?

• 2

• 6

• 16

• 3

• 7

When writing the formula for an ionic compound - which of the following rules must be followed? (YOU MAY SELECT MORE THAN ONE ANSWER)

• The cation (metal) must be written first

• The anion (nonmetal) must be written first

• The number 1 cannot be written as a subscript

• You should not reduce subscripts

When creating a dot diagram for an atom - how do you know how many electrons to place around each symbol?

• Use the charge the ion creates

• Use the number of valence electrons

• Use subscript from the formula

• Use the atomic number

How many total electrons are transferred from the cation to the anion in the formation of sodium phosphide?

• 1

• 5

• 8

• 3

How will oxygen form an ion to become stable?

• Gain 2 electrons

• Lose 2 electrons

• Gain 6 electrons

• Lose 6 electrons

What is the correct formula for an ionic bond between strontium and oxygen?

• SrO

• Sro

• Sr₂O₂

• Sr₂O₆

• Sr₆O₂