Question

notes: ionic bonding

• ionic bonds form between a positive ion and a negative ion.
• the overall charge of the compound must be neutral - the compound must have the same number of positive and negative charges.

click on the link for the simulation and create the ionic compounds listed below. to correctly make an ionic compound the shape must be rectangular.
https://phet.colorado.edu/en/simulation/ion - model - mc/
for example, an ionic compound containing sodium (na) and oxygen (o) has two sodium ions and one oxide ion.
na⁺ o²⁻
total positive charges: 2×(+1) = +2
total negative charges: 1×(-2) = -2
formula: na₂o
use the simulation to create ionic compounds between the ions. complete the table below

elements in ionic compound	total positive charges	total negative charges	ionic compound formula
copper (ii) and oxygen
sodium and sulfur
barium and chlorine
silver and sulfur
magnesium and iodine
aluminum and oxygen

Explanation:

Step1: Identify ion charges

Copper (II): $Cu^{2+}$ (+2), Oxygen: $O^{2-}$ (-2)

Step2: Balance total charges

Total positive: $1 \times (+2) = +2$
Total negative: $1 \times (-2) = -2$
Formula: $CuO$

Step3: Identify ion charges

Sodium: $Na^{+}$ (+1), Sulfur: $S^{2-}$ (-2)

Step4: Balance total charges

Total positive: $2 \times (+1) = +2$
Total negative: $1 \times (-2) = -2$
Formula: $Na_2S$

Step5: Identify ion charges

Barium: $Ba^{2+}$ (+2), Chlorine: $Cl^{-}$ (-1)

Step6: Balance total charges

Total positive: $1 \times (+2) = +2$
Total negative: $2 \times (-1) = -2$
Formula: $BaCl_2$

Step7: Identify ion charges

Silver: $Ag^{+}$ (+1), Sulfur: $S^{2-}$ (-2)

Step8: Balance total charges

Total positive: $2 \times (+1) = +2$
Total negative: $1 \times (-2) = -2$
Formula: $Ag_2S$

Step9: Identify ion charges

Magnesium: $Mg^{2+}$ (+2), Iodine: $I^{-}$ (-1)

Step10: Balance total charges

Total positive: $1 \times (+2) = +2$
Total negative: $2 \times (-1) = -2$
Formula: $MgI_2$

Step11: Identify ion charges

Aluminum: $Al^{3+}$ (+3), Oxygen: $O^{2-}$ (-2)

Step12: Balance total charges

Total positive: $2 \times (+3) = +6$
Total negative: $3 \times (-2) = -6$
Formula: $Al_2O_3$

Answer:

Elements in ionic compound	Total positive charges	Total negative charges	Ionic Compound formula
Copper (II) and oxygen	+2	-2	$CuO$
Sodium and sulfur	+2	-2	$Na_2S$
Barium and chlorine	+2	-2	$BaCl_2$
Silver and sulfur	+2	-2	$Ag_2S$
Magnesium and iodine	+2	-2	$MgI_2$
Aluminum and oxygen	+6	-6	$Al_2O_3$