Question

Which of the following has greater covalent character? NaF or KI?

Answer 1

welcome on OS :) @shivnadimpalli

Answer 2

Moving tu ur ques what u think ??

Answer 3

I guess I need to know the priority order of Fajans's rules.
Covalent character in ionic bond is inversely proportional to size of cation and directly proportion to the size of the anion.
Na+ < K+
BUT F-<Cl- too.
So...

Answer 4

Actually to calculate it we need difference in their electronegtivity values

Answer 5

Electronegtivity difference of NaF = 3.05
Electronegtivity difference of KI = 1.84

So KI is more closer to Covalent character as compare to NaF

Answer 6

More the electronegtivity difference more will be the ionic character So ...????

Answer 7

u know how to calcute electronegtivity difference ???

Answer 8

Umm yeah. But i want the Covalent character. Not the ionic character.
Like. This question is based on polarisability and Fajans's rules.

Answer 9

ionic and covalent character are at opposite ends of each other, so knowing one also gets the other, @sarah786 is correct. fajan's rules also relate back to electronegativity, so either approach will work

Answer 10

okay! Thanks! @JFraser and @sarah786

Answer 11

yw !! :)