which elements have the same number of valence electrons. Match them:

Question

Carbon
Hydrogen
Oxygen
Helium
Potassium
Silicon
Sulphur
Neon

Answer 1

To match the elements based on the number of valence electrons, we can refer to their positions in the periodic table. Here’s the breakdown:

• Carbon (C): 4 valence electrons
• Silicon (Si): 4 valence electrons
• Hydrogen (H): 1 valence electron
• Helium (He): 2 valence electrons
• Oxygen (O): 6 valence electrons
• Sulfur (S): 6 valence electrons
• Potassium (K): 1 valence electron
• Neon (Ne): 8 valence electrons

Now, we can match them based on their valence electron counts:

• Carbon (C) - Silicon (Si) (4 valence electrons)
• Hydrogen (H) - Potassium (K) (1 valence electron)
• Oxygen (O) - Sulfur (S) (6 valence electrons)
• Helium (He) - Neon (Ne) (2 valence electrons, but note that Neon has a full outer shell)

So the matches are:

1. Carbon (C) - Silicon (Si)
2. Hydrogen (H) - Potassium (K)
3. Oxygen (O) - Sulfur (S)
4. Helium (He) - Neon (Ne)