Question

Carbon ____
Hydrogen _____
Oxegen ____
Argon ____

Postasium
silicon
sulpher
neon

Which elements have the same number of valence electrons

Answer 1

To determine which elements have the same number of valence electrons, we can look at their group in the periodic table:

1. **Carbon (C)** - Group 14, has 4 valence electrons.
2. **Hydrogen (H)** - Group 1, has 1 valence electron.
3. **Oxygen (O)** - Group 16, has 6 valence electrons.
4. **Argon (Ar)** - Group 18, has 8 valence electrons.

Continuing with the others:
5. **Potassium (K)** - Group 1, has 1 valence electron.
6. **Silicon (Si)** - Group 14, has 4 valence electrons.
7. **Sulfur (S)** - Group 16, has 6 valence electrons.
8. **Neon (Ne)** - Group 18, has 8 valence electrons.

Now, let's group them based on the number of valence electrons:

- **1 valence electron:** Hydrogen (H), Potassium (K)
- **4 valence electrons:** Carbon (C), Silicon (Si)
- **6 valence electrons:** Oxygen (O), Sulfur (S)
- **8 valence electrons:** Argon (Ar), Neon (Ne)

**Elements with the same number of valence electrons:**
- Hydrogen (H) and Potassium (K) - 1 valence electron
- Carbon (C) and Silicon (Si) - 4 valence electrons
- Oxygen (O) and Sulfur (S) - 6 valence electrons
- Argon (Ar) and Neon (Ne) - 8 valence electrons

These pairs all have the same number of valence electrons.