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

Carbon-
Hydrogen-
Oxygen-
Argon-

answers; potassium, silicon, sulphur, Neon

1 answer

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