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Complete the chemical formula for each ionic compound. Consult the periodic table to help you answer the question. magnesium nitride: Mg N calcium chloride: CaCl

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Answer:

Magnesium Nitride - Mg₃N₂

Calcium Chloride - CaCl₂

Explanation:

Magnesium (Mg) has a charge of +2, Nitrogen (N) has a charge of -3.

Swap the charges and you get Mg₃N₂.

Mg: 2(3) = 6

N: -3(2) = -6

The charges cancel out so the formula is correct.

Calcium (Ca) has a charge of +2, Chlorine has a charge of -1.

Swap the charges and you get CaCl₂.

Ca: 2(1) = 2

Cl: -1(2) = -2

The charges cancel out so the formula is correct.

Hope this helps. :)

Magnesium Nitride - Mg₃N₂

Calcium Chloride - CaCl₂

1. Magnesium (Mg) has a charge of +2, Nitrogen (N) has a charge of -3.

[tex]Mg^{2+}[/tex]                  [tex]N^{3-}[/tex]

2. Adjust the subscript on each cation and anion to balance the overall charge.

[tex]Mg_3N_2[/tex]

3. Check that the sum of charge of cation equals the sum of charges of the anions.

Mg: 2(3) = 6

N: -3(2) = -6

The charges cancel out so the formula is [tex]Mg_3N_2[/tex].

ii)  1. Calcium (Ca) has a charge of +2, Chloride (Cl) has a charge of -1.

[tex]Ca^{2+}[/tex]                  [tex]Cl^{-}[/tex]

2. Adjust the subscript on each cation and anion to balance the overall charge.

[tex]CaCl_2[/tex]

3. Check that the sum of charge of cation equals the sum of charges of the anions.

 Ca: 2(1) = 2

Cl: -1(2) = -2

The charges cancel out so the formula is [tex]CaCl_2[/tex].

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