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

Answer:

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

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.

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

$[Ca^{2+}]=1s^22s^2p^63s^23p^6$

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

$[Cl^{-}]=1s^22s^2p^63s^23p^6$

$Ca^{2+}+2Cl^-\rightarrow CaCl_2$