Question
GeneralGeneralGeneral

what is the valency of fluorine in caf2

Verified Answer

In calcium fluoride (CaF2), the valency of fluorine is 1.

Fluorine needs one electron to complete its outermost shell and achieve a stable electronic configuration. Therefore, it gains one electron and forms a fluoride ion:

F⁻

Explanation using CaF₂

  • Calcium (Ca) loses 2 electrons and forms Ca²⁺

  • Each fluorine atom gains 1 electron and forms F⁻

  • Two fluorine atoms are needed to balance the +2 charge of calcium

So, the formula becomes:

CaF2

Final Answer

The valency of fluorine in CaF2 is:

1