Question

Electrovalent compounds are:
A.Good conductor of electricity
B.Polar in nature
C.Low $M.P{\text{ }}and{\text{ }}B.P$
D.Easily available

Answer 1

This bond is made when the electrostatic force of attraction. This holds charges together which are charged opposite. These ions form a bond called an electrovalent bond. It is also called an ionic bond. When there is a formation of chemical bonds between two atoms by complete transfer of one or more electrons from one atom to another, it causes the atoms to gain inert gas configuration.

Complete step-by-step answer: The reason why bonds are formed is that they need to gain the most stable configuration which is called as inert gas configuration. In electrovalent bond formation, the bond which is formed is the donation or accepting of electrons. This causes the atoms to gain a complete octet configuration.
This kind of bond is formed when one atom gains electrons while the other atom loses electrons from its outermost level or orbit.
The electrostatic attraction always tends to decrease the potential energy. Hence, the potential energy of the system is much less than it was before the formation of an ionic bond.
Thus the correct option is $\left( B \right)$.
In this bond we can see that there is a complete transfer of valence electrons and this causes them to achieve stability. The positive charge ion is called cation and the negatively charged ion is called anion. Anions are made when the atoms gain electrons.

Note: Cations are made when an atom loses an electron. The overall charge on a stable atom is zero as there are an equal number of protons in the nucleus and the number of electrons surrounding the nucleus in orbit. When ions are made, there is a change in the number of electrons. This causes the overall charge to change on an atom.