Question

if the size of cation is small then the covalent character will be more or less

Answer 1

Answer:

it will be more follow me

Answer 2

Answer:

Larger atoms have many shells of electrons around the nucleus. The outermost electron is far from the nucleus, and is also protected from the attraction of the nucleus by electrons in the inner shells (“shielding”). Therefore the outermost electron(s) can be easily “lost” to produce cations. Such atoms are said to be “electropositive”.

In smaller atoms, the outermost shell is close to the nucleus and is strongly attracted by it. Therefore electrons can be easily added to the outer shell to make anions.Such atoms are said to be “electronegative”.

Then the cation and anion are attracted to each other because they have opposite charges. Thus this combination gives rise to ionic compounds.

But if the combining atoms are of similar sizes and the electronegativities are also similar, then oppositely charged ions cannot be formed. Therefore they “share” their outermost electrons to form covalent bonds. Thus diatomic gas molecules like O2, N2 and Cl2 have covalent bonds between the atoms (both atoms are the same; therefore same size and same electronegativity).

Therefore the second part of your question (“smaller cations and larger anions form covalent bonds”) is not correct. There are no “ions” at all.

hopping to be helpful

please follow me ☺️

and thank me