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 their number of valence electrons:

  • Carbon (C) has 4 valence electrons. It matches with Silicon (Si), which also has 4 valence electrons.
  • Hydrogen (H) has 1 valence electron. It does not have a direct match from the provided options but typically matches with elements like lithium (Li) or sodium (Na) in its group.
  • Oxygen (O) has 6 valence electrons. It matches with Sulfur (S), which also has 6 valence electrons.
  • Argon (Ar) has 8 valence electrons. It matches with Neon (Ne), which also has 8 valence electrons.

So the matches would be:

  • Carbon - Silicon
  • Hydrogen - (no direct match)
  • Oxygen - Sulfur
  • Argon - Neon