Question

In an iconic compound the positive ion is called blank and the negative ion is called the ______________.

Answer 1

cation, anion

Step-by-step explanation:

Ionic bond: This type of bond is formed when there is a complete transfer of electrons from one element to another element. In this bonding one element is always a metal and another is a non-metal.

The element which loses the electron and makes the positive ion is known as cation. The element which gain the electron and makes the negative ion is known as anion. Both cation and anion makes the ionic bond by electrostatic attractions.

Example:-

Calcium is the element of the group 2 and period 4 which means that the valence electronic configuration is
`[Ar]4s^2`.

Chlorine is the element of the group 17 and period 3 which means that the valence electronic configuration is
`[Ne]3s^23p^5`.

Thus, calcium loses 2 electrons to 2 atoms of chlorine and these 2 atoms of chlorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.

Thus, the formula of calcium chloride is
`CaCl_2`.