Question

practice: polyatomics
name colin gray
period 4 science
directions: name or indicate the formula for each of the following below. turn in
to the classroom page when you are done.

1. al(no₃)₃ chlorine nitrate
2. fe(clo₃)₂ iron chlorate
3. beryllium phosphate
4. ammonium nitride
5. k₂co₃
6. barium sulfate
7. silver carbonate
8. ga(c₂h₃o₂)₃
9. nh₄no₃
10. lithium nitrate
11. mgso₄
12. tin (iv) sulfate

Explanation:

Step1: Analyze \( \text{Al(NO}_3\text{)}_3 \)

The compound has aluminum (\( \text{Al}^{3+} \)) and nitrate (\( \text{NO}_3^- \)) ions. The name is Aluminum Nitrate (note: the original handwritten "Chlorine Nitrate" is incorrect).

Step2: Analyze \( \text{Fe(ClO}_3\text{)}_2 \)

Iron here has a +2 charge (since \( \text{ClO}_3^- \) is -1, two of them give -2, so Fe is +2). The name is Iron(II) Chlorate (original "Iron Chlorate" can be more precise as Iron(II) Chlorate).

Step3: Beryllium Phosphate

Beryllium is \( \text{Be}^{2+} \), phosphate is \( \text{PO}_4^{3-} \). To balance charges, we need 3 \( \text{Be}^{2+} \) and 2 \( \text{PO}_4^{3-} \), so formula is \( \text{Be}_3(\text{PO}_4)_2 \).

Step4: Ammonium Nitride

Ammonium is \( \text{NH}_4^+ \), nitride is \( \text{N}^{3-} \). Balancing charges: 3 \( \text{NH}_4^+ \) and 1 \( \text{N}^{3-} \), formula is \( (\text{NH}_4)_3\text{N} \).

Step5: \( \text{K}_2\text{CO}_3 \)

Potassium (\( \text{K}^+ \)) and carbonate (\( \text{CO}_3^{2-} \)). Two \( \text{K}^+ \) balance one \( \text{CO}_3^{2-} \). Name is Potassium Carbonate.

Step6: Barium Sulfate

Barium is \( \text{Ba}^{2+} \), sulfate is \( \text{SO}_4^{2-} \). Formula is \( \text{BaSO}_4 \) (1:1 ratio, charges balance).

Step7: Silver Carbonate

Silver is \( \text{Ag}^+ \), carbonate is \( \text{CO}_3^{2-} \). Two \( \text{Ag}^+ \) balance one \( \text{CO}_3^{2-} \), formula is \( \text{Ag}_2\text{CO}_3 \).

Step8: \( \text{Ga(C}_2\text{H}_3\text{O}_2\text{)}_3 \)

\( \text{C}_2\text{H}_3\text{O}_2^- \) is acetate ( -1 charge). Gallium here is +3 (three acetates, each -1, so Ga is +3). Name is Gallium(III) Acetate.

Step9: \( \text{NH}_4\text{NO}_3 \)

Ammonium (\( \text{NH}_4^+ \)) and nitrate (\( \text{NO}_3^- \)). Name is Ammonium Nitrate.

Step10: Lithium Nitrate

Lithium is \( \text{Li}^+ \), nitrate is \( \text{NO}_3^- \). Formula is \( \text{LiNO}_3 \) (1:1 ratio).

Step11: \( \text{MgSO}_4 \)

Magnesium (\( \text{Mg}^{2+} \)) and sulfate (\( \text{SO}_4^{2-} \)). Name is Magnesium Sulfate.

Step12: Tin(IV) Sulfate

Tin(IV) is \( \text{Sn}^{4+} \), sulfate is \( \text{SO}_4^{2-} \). To balance, 1 \( \text{Sn}^{4+} \) and 2 \( \text{SO}_4^{2-} \), formula is \( \text{Sn(SO}_4\text{)}_2 \).

Answer:

1. Aluminum Nitrate (Correct formula name, original error fixed)
2. Iron(II) Chlorate (More precise, original was less specific)
3. \( \boldsymbol{\text{Be}_3(\text{PO}_4)_2} \)
4. \( \boldsymbol{(\text{NH}_4)_3\text{N}} \)
5. Potassium Carbonate
6. \( \boldsymbol{\text{BaSO}_4} \)
7. \( \boldsymbol{\text{Ag}_2\text{CO}_3} \)
8. Gallium(III) Acetate
9. Ammonium Nitrate
10. \( \boldsymbol{\text{LiNO}_3} \)
11. Magnesium Sulfate
12. \( \boldsymbol{\text{Sn(SO}_4\text{)}_2} \)