Question

Which compound is held together by the electrostatic force between two ions?

A. CF4
B. NH3
C. CaBr2
D. CO2

Answer 1

Answer: Option (C) is the correct answer.

Step-by-step explanation:

A compound that is formed by transfer of electrons results in the formation of an ionic bond and it is known as an ionic compound.

For example, calcium has 2 valence electrons and bromine has 7 valence electrons. So, in order to complete their octet calcium donates its two valence electrons to two bromine atoms.

Therefore, it results in the formation of an ionic compound
`CaBr_(2)`.

In an ionic compound there is partial positive charge on the cation and partial negative charge on the anion.

Whereas a compound formed by sharing of electrons is known as a covalent compound.

For example,
`CF_(4)`,
`NH_(3)` and
`CO_(2)` are all covalent compounds.

Thus, we can conclude that
`CaBr_(2)` is the compound that is held together by the electrostatic force between two ions.

Answer 2

Ionic bonds are chemical bonds between a positively charged ion and a negatively charged ion. These types of bonds are held together by an electrostatic force.

The only ionic compound among your choices is Calcium Bromide or CaBr2. So the answer is C.