Question

Most favourable conditions for electrovalency are:

• A. low charge on ions, large cation and small anion
• B. high charge on ions, small cation and large anion
• C. high charge on ions, large cation and small anion
• D. low charge on ions, small cation and large anion

Answer 1

The correct option is A low charge on ions, large cation and small anion

Electrovalency is calculated for ionic compounds. Greater the size of metal atom, easier is the formation of cation. Smaller the size of the non-metal, easier is the formation of the anion.

Lower charge is another favourable factor in the formation of ionic compounds. It is easier to remove smaller number of electrons to form a positively charged cation as a lesser amount of ionization energy has to be supplied. Same is the case for anion formation.