Question

ionic nomenclature ws
name

for each pair of ions:

1. write the missing ionic charges
2. write the chemical formula
3. write the chemical name

example) nh₄ & co₃ +1 -2 (nh₄)₂co₃ ammonium carbonate

1. k + hco₃
2. mg + cro₄
3. ba + o₂
4. al + h₂po₄
5. mg + hso₃
6. ba + cl
7. be + cn
8. ca + clo

Explanation:

1) K⁺ & HCO₃⁻

Step1: Determine ionic charges

Potassium (\(K\)) has a charge of \(+1\) (\(K^{+}\)), bicarbonate (\(HCO_{3}\)) has a charge of \(-1\) (\(HCO_{3}^{-}\)).

Step2: Write chemical formula

Using the criss - cross method (swap the magnitudes of charges), since \(|+ 1|=| - 1|\), the formula is \(KHCO_{3}\).

Step3: Write chemical name

The name is Potassium Bicarbonate.

2) Mg²⁺ & CrO₄²⁻

Step1: Determine ionic charges

Magnesium (\(Mg\)) has a charge of \(+2\) (\(Mg^{2+}\)), chromate (\(CrO_{4}\)) has a charge of \(-2\) (\(CrO_{4}^{2-}\)).

Step2: Write chemical formula

Since \(|+2| = |-2|\), the formula is \(MgCrO_{4}\).

Step3: Write chemical name

The name is Magnesium Chromate.

3) Ba²⁺ & O²⁻

Step1: Determine ionic charges

Barium (\(Ba\)) has a charge of \(+2\) (\(Ba^{2+}\)), oxide (\(O\)) has a charge of \(-2\) (\(O^{2-}\)).

Step2: Write chemical formula

Since \(|+2|=|-2|\), the formula is \(BaO\).

Step3: Write chemical name

The name is Barium Oxide.

4) Al³⁺ & H₂PO₄⁻

Step1: Determine ionic charges

Aluminum (\(Al\)) has a charge of \(+3\) (\(Al^{3+}\)), dihydrogen phosphate (\(H_{2}PO_{4}\)) has a charge of \(-1\) (\(H_{2}PO_{4}^{-}\)).

Step2: Write chemical formula

Using the criss - cross method, swap the magnitudes of charges. So the formula is \(Al(H_{2}PO_{4})_{3}\).

Step3: Write chemical name

The name is Aluminum Dihydrogen Phosphate.

5) Mg²⁺ & HSO₃⁻

Step1: Determine ionic charges

Magnesium (\(Mg\)) has a charge of \(+2\) (\(Mg^{2+}\)), bisulfite (\(HSO_{3}\)) has a charge of \(-1\) (\(HSO_{3}^{-}\)).

Step2: Write chemical formula

Using the criss - cross method, the formula is \(Mg(HSO_{3})_{2}\).

Step3: Write chemical name

The name is Magnesium Bisulfite.

6) Ba²⁺ & Cl⁻

Step1: Determine ionic charges

Barium (\(Ba\)) has a charge of \(+2\) (\(Ba^{2+}\)), chloride (\(Cl\)) has a charge of \(-1\) (\(Cl^{-}\)).

Step2: Write chemical formula

Using the criss - cross method, the formula is \(BaCl_{2}\).

Step3: Write chemical name

The name is Barium Chloride.

7) Be²⁺ & CN⁻

Step1: Determine ionic charges

Beryllium (\(Be\)) has a charge of \(+2\) (\(Be^{2+}\)), cyanide (\(CN\)) has a charge of \(-1\) (\(CN^{-}\)).

Step2: Write chemical formula

Using the criss - cross method, the formula is \(Be(CN)_{2}\).

Step3: Write chemical name

The name is Beryllium Cyanide.

8) Ca²⁺ & ClO⁻

Step1: Determine ionic charges

Calcium (\(Ca\)) has a charge of \(+2\) (\(Ca^{2+}\)), hypochlorite (\(ClO\)) has a charge of \(-1\) (\(ClO^{-}\)).

Step2: Write chemical formula

Using the criss - cross method, the formula is \(Ca(ClO)_{2}\).

Step3: Write chemical name

The name is Calcium Hypochlorite.

Answer:

1. \(K^{+},HCO_{3}^{-},KHCO_{3}\), Potassium Bicarbonate
2. \(Mg^{2 + },CrO_{4}^{2-},MgCrO_{4}\), Magnesium Chromate
3. \(Ba^{2+},O^{2 - },BaO\), Barium Oxide
4. \(Al^{3+},H_{2}PO_{4}^{-},Al(H_{2}PO_{4})_{3}\), Aluminum Dihydrogen Phosphate
5. \(Mg^{2+},HSO_{3}^{-},Mg(HSO_{3})_{2}\), Magnesium Bisulfite
6. \(Ba^{2+},Cl^{-},BaCl_{2}\), Barium Chloride
7. \(Be^{2+},CN^{-},Be(CN)_{2}\), Beryllium Cyanide
8. \(Ca^{2+},ClO^{-},Ca(ClO)_{2}\), Calcium Hypochlorite