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What is the valency of helium?

What is the valency of helium? Correct Answer 0

The correct answer is 0.

  • The valency of an element is related to how many electrons are in the outer shell.
  • The electronic configuration of Helium (He) is 2, 0.
  • Hence Valency of element Helium is 0.


Additional Information

  • Inner-shell electrons: Those electrons that are not in the outer shell and are not involved in the reactivity of the element.
  • Valence electrons: The electrons in the highest occupied principal energy level of an atom.
  • Phosphorus (P) has the maximum number of valence electrons, equal to 5.
    • Electronic configuration of P is 2, 8, 5.
  • In the periodic table, valance electrons are indicated by Group number.
  • Argon (Ag) has 8 valance electrons in the third shell.
  • The Fixed position of valance electrons makes material insulators.
  • The unreactive inert gas has a full shell of valance electrons.

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