Give the formula and describe the structure of a noble gas species which is isostructural with:

(i)

(ii)

(iii)

Q.

Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with:

(i) iodide (ii) iron(II) solution and (iii) H₂S

Q. Given the species $N_2,CO,N{O}^{+}$ and $C{N}^{-}$ which of the following statements are true for this :
(I) All the species are diamagnetic
(II) All the species are isostructural
(III) All the species have identical bond order
(IV) More than one species have zero dipole moment

Q. Some of properties of two species $N{O}_3^{-}$ and $H_3{O}^{+}$ are described below. Which one of the following statement is correct?

Q. '$Xe{F}_4$ is isostructural with $IC{l}_4{}^{-}$'
Answer whether the above statement is true or false.

Q. Isostructural species are those which have the same shape and hybridisation. Among the given species, identify the isostructural pairs.