Ionic Compound Charges and Bonds

Which list of elements contains NO metals?

• Li, Na, K

• Fe, Cu, O

• C, H, O

Which pair of compounds contains no metals?

• H₂O and NaCl

• FeCl₃ and PCl₃

• C₂H₆O and NH₃

• MgO and Cu(OH)₂

Identify the set of elements whose atoms contain less than four valence electrons

• Li, C, Br

• Al, Mg, Na

• N, O, F

• K, P, S

When metals become ions, those ions have a positive charge.

• True

• False

When nonmetals become ions, they experience oxidation.

• True

• False

Look up the charge lithium and oxygen on the image. What is the correct formula for the compound, lithium oxide?

(Click to enlarge the image to check for charges.)

• LiO

• Li₂O

• LiO₂

• Li₂O₂

Aluminum is in column 13 & has a charge of _. Fluorine is in column 17 & has a charge of _.

(Enlarge the image to check.)

• -3; +1

• +3; -1

• -3; -1

• +3; +1

To form a charge of +2 an atom must _ electrons.  To form -3 it must _ electrons.

• Gain 2; Lose 3
• Gain 3; Lose 2
• Lose 2; Gain 3
• Lose 3; Gain 2

Look up the charge potassium and sulfur on the image. What is the correct formula for the compound, potassium sulfde?

(Click to enlarge the image to check for charges.)

• KS

• K₂S

• K₂S₁

• KS₂

How do the following two elements bond together?
Na¹⁺  F^1-         

• NaF
• NaF₃
• Na₃F
• Na₁F₂