Answer:
This is due the different charges of fluoride and oxide ions.
Explanation:
When calcium reacts it is oxidized to Ca²⁺. In the same way, fluoride ion is reduced to F⁻ and oxide ion to O²⁻.
When these ions are combined, the molecule must be neutral. That means 2 ions of F⁻ are necessaries and just 1 O²⁻ ion will reacts producing:
CaF₂ and CaO.
The different charges of these ions is the reason why calcium will combine in different ratios.
Calcium combines in different ratio with fluorine an oxide due to the varying number of valence electrons with fluorine and oxide ion.
Calcium has been the element of group 2. The element has been possessing 2 valence electrons, and requires to donate 2 electrons to acquire the stable noble gas configuration.
The Fluorine has been a halogen and has been comprising of 7 valence electrons and requires 1 electron to form stability. Oxide has been the oxygen ion with lacking 2 electrons.
The combination of calcium with fluorine has been completed with the binding of 2 fluorine atoms, in order to become stable and forms [tex]\rm CaF_2[/tex].
The combination of 1 oxide ion has been able to completely stable the product CaO
Thus, due to the varying number of electrons with fluorine and oxide ion, calcium combines in a different ratio.
For more information about oxide ion, refer to the link:
https://brainly.com/question/10931958
