Question

Iconic character of metallic halides tends toward
covalent nature as per Fajan's rule. Such covalent
halides behave as non-metal in their higher oxidation
states. The property to hydrolyse to give oxy-acids of
the elements and corresponding hydro halogen acid for
most non-metallic elements proceeds exceptionally in
the way, keeping oxidation number of elements and
halide same in oxo-acide.
Non-polar halides are immiscible in water, as they do
not show hydrolysis, but halides of same elements with
empty d-orbital undergo hydrolysis. Stability of halides
of higher state are govered by inert pair effect
Which one does not exist​


1) PbCl4

2) PbF4

3) Pbl4

4) PbBr4

Answer 1

Answer:

pbF4 not exist due to high nuclear charge