Chemistry Valence Electrons Lewis Dot Structures Worksheet - Fill ... - Free Printable

It looks like you've uploaded a Chemistry: Valence Electrons & Lewis Dot Structures Worksheet that asks students to fill in information about various elements, including:

- Number of valence electrons
- Whether the element is a metal or non-metal
- Lewis dot structure (electron dots around the element symbol)
- Whether it's likely to gain or lose electrons
- How many electrons it will gain or lose

However, I currently cannot view or access images. You'll need to provide the content of the worksheet textually, such as listing the elements and any instructions or data already filled in.

But since this is a standard chemistry worksheet, I can help you solve it completely if you'd like — just let me know!

Here’s how we’ll solve each row for each element:

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🔬 General Rules:

1. Valence Electrons:
- Use the group number (for main group elements).
- For example:
- Group 1 (Alkali metals): 1 valence electron
- Group 2 (Alkaline earth metals): 2 valence electrons
- Group 13: 3, Group 14: 4, ..., Group 17: 7, Group 18: 8 (except He = 2)

2. Metal vs Non-Metal:
- Metals: Left side of periodic table (Groups 1–12, plus some in 13–15)
- Non-metals: Right side (Groups 14–18, except metals like Pb, Bi)
- Metalloids: Between (B, Si, Ge, As, Sb, Te)

3. Lewis Dot Structure:
- Draw the element symbol and place dots around it (top, right, bottom, left) to represent valence electrons.
- Dots are placed one per side before pairing.

4. Gain or Lose Electrons?
- Metals lose electrons to form cations.
- Non-metals gain electrons to form anions.

5. How Many?
- Metals: Usually lose enough electrons to reach noble gas configuration (e.g., Na loses 1, Mg loses 2).
- Non-metals: Gain electrons to complete octet (e.g., Cl gains 1, O gains 2).

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✔ Let's go through the list on your worksheet (based on typical versions):

| Element | Valence Electrons | Metal/Non-Metal | Lewis Dot Structure | Gain or Lose? | How Many? |
|---------------|-------------------|------------------|----------------------|----------------|------------|
| Hydrogen | 1 | Non-metal | H• | Gain | 1 |
| Lithium | 1 | Metal | Li• | Lose | 1 |
| Calcium | 2 | Metal | Ca: •• | Lose | 2 |
| Magnesium | 2 | Metal | Mg: •• | Lose | 2 |
| Sodium | 1 | Metal | Na• | Lose | 1 |
| Strontium | 2 | Metal | Sr: •• | Lose | 2 |
| Boron | 3 | Metalloid | B: ••• | Lose/Gain? | 3 (often loses) |
| Aluminum | 3 | Metal | Al: ••• | Lose | 3 |
| Carbon | 4 | Non-metal | C: •••• | Share (covalent)| 4 |
| Silicon | 4 | Metalloid | Si: •••• | Share | 4 |
| Lead | 4 | Metal | Pb: •••• | Lose | 2 or 4 |
| Nitrogen | 5 | Non-metal | N: ••••• | Gain | 3 |
| Phosphorus | 5 | Non-metal | P: ••••• | Gain | 3 |

> ⚠️ Note: Some elements (like lead) can have variable charges; common ion is Pb²⁺.

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📝 Example: Oxygen (not listed but common)

- Valence electrons: 6
- Non-metal
- Lewis: O with 6 dots (two pairs and two singles)
- Gains 2 electrons → O²⁻

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Please confirm:
- Are all these elements correct?
- Do you want me to generate the full completed table in text form?
- Or do you want drawings of Lewis structures explained?

Let me know and I’ll finish the worksheet for you!