Question

2. Favourable conditions for electrovalency are A Low charge on ions, large cation, small anion (b) High charge on ions, small cation, large anion (c) High charge on ions, large cation, small anion (d) Low charge on ions, small cation, large anion ?​

Answer 1

Answer:

(A) Low charge on ions, large cation, small anion

Explanation:

Electrovalency: The number of electrons lost or gained by an atom to attain a stable electronic configuration in forming an ionic bond is called its electrovalency.

• The elements which give up electrons to form positive ions have positive electrovalence, while the elements which accept electrons to form negative ions have negative electrovalence.
• For example, during the formation of Sodium chloride (Na+Cl–), a Sodium atom (Na) loses one electron to form sodium ion(Na+) while a chlorine atom (Cl) gains an electron to form chloride ion(Cl–).

Electrovalency is calculated for ionic compounds.

• The greater the size of the metal atom, the easier is the formation of the cation.
• The smaller the size of the non-metal, the easier is the formation of the anion.
• The lower charge is another favorable factor in the formation of ionic compounds.
• It is easier to remove a smaller number of electrons to form a positively charged cation as a lesser amount of ionization energy has to be supplied.
• The same is the case for anion formation.

The most favorable conditions for electrovalency are a low charge on ions, large cations, and small anions.