Question

explain the following
I) Lif is less then ionic than csF.
ii) Li salts are predominatelycovalent while Na salts are predominately ionic? ​

Answer 1

Answer:

I) Lif is less then ionic than csF

=The % ionic character depends upon electronegativity difference between the bonded atoms. ... Hence CsF is more ionic than LiF. CsF has 92% ionic character while LiF has 89.5% ionic character ( keep in mind that no bond is 100% ionic in nature).

ii) Li salts are predominatelycovalent while Na salts are predominately ionic?

=lithium salts are predominantly covalent while sodium salts are predominantly ionic. ... As, Fajan's rule explains that smaller the size of cation higher will be polarising power and so the covalent character will be large. Whereas sodium ion is bigger than lithium ion so the compounds formed are ionic in nature.

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