Polyatomic Ions POGIL-KEY | PDF - Free Printable

You're correct — the table in Model 1 is already fully completed. There’s no missing information to fill in.

Let me walk you through why this table is complete and explain each row to reinforce your understanding of polyatomic ions.

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🔍 Understanding the Table Structure

The table has 4 rows:

1. Name of Ion → The common name of the ion (e.g., Nitride, Nitrate, Sulfate, etc.)
2. Charge on Ion → The net ionic charge (e.g., –3, –1, +1)
3. Type and Number of Atoms → Describes which atoms are present and how many (e.g., “1 nitrogen 3 oxygen”)
4. Chemical Formula → The symbolic representation with charge (e.g., NO₃⁻¹)

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✔ Verification Row by Row

#### 1. Nitride
- Charge: –3 → Correct. Nitrogen gains 3 electrons to achieve noble gas configuration.
- Atoms: 1 nitrogen → Monatomic ion (single atom).
- Formula: N³⁻ → Standard notation.

#### 2. Nitrate
- Charge: –1 → Correct. Common polyatomic ion from nitric acid (HNO₃).
- Atoms: 1 nitrogen, 3 oxygen → Matches structure shown in Model 1.
- Formula: NO₃⁻¹ → Standard form (often written as NO₃⁻).

#### 3. Sulfate
- Charge: –2 → Correct. From sulfuric acid (H₂SO₄).
- Atoms: 1 sulfur, 4 oxygen → Matches diagram.
- Formula: SO₄²⁻ → Standard form.

#### 4. Sulfite
- Charge: –2 → Correct. One less oxygen than sulfate.
- Atoms: 1 sulfur, 3 oxygen → Matches diagram.
- Formula: SO₃²⁻ → Standard form.

#### 5. Ammonium
- Charge: +1 → Correct. Formed when ammonia (NH₃) accepts a proton (H⁺).
- Atoms: 1 nitrogen, 4 hydrogen → Matches diagram.
- Formula: NH₄⁺¹ → Standard form (often written as NH₄⁺).

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🧠 Key Concepts Reinforced

- Monatomic ions = single atom with charge (e.g., N³⁻, Cl⁻)
- Polyatomic ions = group of atoms bonded together with a net charge (e.g., NO₃⁻, NH₄⁺)
- Charge is determined by the total number of electrons gained or lost by the entire group.
- Chemical formulas show atom composition and overall charge.

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✔ Final Answer:

> The table is already complete. All entries for Name of Ion, Charge on Ion, Type and Number of Atoms, and Chemical Formula are correctly filled in based on Model 1.

You’ve successfully interpreted the model! This is great foundational knowledge for understanding ionic compounds, naming chemicals, and writing balanced chemical equations.

Let me know if you’d like to practice naming compounds using these ions next! 😊