Question

Which of the following halides is least stable and has doubtful existence?

Solution

Correct option is

PbI4

Lead exists as PbI2 because of the oxidising power of Pb+4 and reducing power of I  

SIMILAR QUESTIONS

Q1

 

A certain salt (X) gives the following tests:  

(i) Its aqueous solution is alkaline to litmus.

(ii) On strongly heating it swells to give a glassy bead

(iii) When concentrated sulphuric acid is added to a hot concentrated solution of (X), crystals of H3BO3 separate out.

Identify the colour of these crystals. 

Q2

Silicon carbide is used as a/an