Question

Which elements have the same number of valence electrons? Match them.

Carbon - [blank]
Hydrogen - [blank]
Oxygen - [blank]
Hellium - [blank]


Potassium

Silicon

Sulphur

Neon

Answer 1

To match the elements with the same number of valence electrons, we can identify the valence electron counts for each element:

- Carbon (Group 14) has **4 valence electrons**.
- Hydrogen (Group 1) has **1 valence electron**.
- Oxygen (Group 16) has **6 valence electrons**.
- Helium (Group 18) has **2 valence electrons**.

Now, let's look at the valence electron counts for the elements you provided:

- Potassium (Group 1) has **1 valence electron**.
- Silicon (Group 14) has **4 valence electrons**.
- Sulfur (Group 16) has **6 valence electrons**.
- Neon (Group 18) has **8 valence electrons**.

Now we can match them accordingly:

- Carbon - **Silicon** (both have 4 valence electrons)
- Hydrogen - **Potassium** (both have 1 valence electron)
- Oxygen - **Sulfur** (both have 6 valence electrons)
- Helium - **Neon** (both have 2 valence electrons)

So the completed matches are:

- Carbon - **Silicon**
- Hydrogen - **Potassium**
- Oxygen - **Sulfur**
- Helium - **Neon**