To match the elements based on the number of valence electrons, we need to identify the number of valence electrons in each of the elements listed:
- Carbon (C) has 4 valence electrons.
- Hydrogen (H) has 1 valence electron.
- Oxygen (O) has 6 valence electrons.
- Argon (Ar) has 8 valence electrons.
Now, let's look at the provided answers:
- Potassium (K) has 1 valence electron.
- Silicon (Si) has 4 valence electrons.
- Sulphur (S) has 6 valence electrons.
- Neon (Ne) has 8 valence electrons.
Now, we can match them:
- Carbon - Silicon (both have 4 valence electrons)
- Hydrogen - Potassium (both have 1 valence electron)
- Oxygen - Sulphur (both have 6 valence electrons)
- Argon - Neon (both have 8 valence electrons)
So the matches are:
- Carbon - Silicon
- Hydrogen - Potassium
- Oxygen - Sulphur
- Argon - Neon