Question

What does the chemical formula cacl2 show about the compound it represents?

Answer 1

a chemical formula that indicates the kinds of atoms and the number of each kind in a molecule of a compound.

Answer 2

The compound represents that calcium chloride is an ionic salt made up of 1 calcium ion and 2 chloride ions.

Step-by-step explanation:

The given chemical formula
`CaCl_2` is of calcium chloride salt.

The chemical formula represents that 1 atom calcium binds with two atoms of chlorine to form a single molecule of calcium chloride.

It is an ionic salt made up 1 calcium ion and 2 chloride ions.

Calcium has atomic number of 20 and chlorine has atomic number of 17. Calcium will loose 2 electrons to gain noble gas stability whereas chlorine atom will gain 1 electron to gain noble gas stability.

`[Ca]=[Ar]4s^2`

`[Ca^(2+)]=1s^22s^2p^63s^23p^6`

`[Cl]=1s^22s^2p^63s^23p^5`

`[Cl^(-)]=1s^22s^2p^63s^23p^6`

`Ca^(2+)+2Cl^-\rightarrow CaCl_2`