Question

Non-metals have _______ valency.

Answer 1

Explanation:

Non-metals: Non-metals are the elements which form negative ions(anions) by accepting or gaining electrons. Non-metals usually have 4, 5, 6 or 7 electrons in their outermost shell.

For example,

• Chlorine has 7 electrons in its valence shell and it will form an anion by accepting one electron from another element during a chemical reaction. So chlorine ion can be represented by${\mathrm{Cl}}^{-}$.
• Fluorine, Carbon etc are other examples of non-metals.

Hence, Non-metals have negative valency.