1.

Structure of ionic compounds The bigger atom or ion will form the lattice and smaller atom/ion will occupy the voids generally the bigger ion is anion and smaller ion is cation in ionic compounds.The type of void occupied by the cation is decided by radius ratio. Identify the correct combination amongst the following -

Answer»

(I)(i)(P)
(II)(ii)(Q)
(III)(iii)(S)
(II)(iii)(S)

Solution :Theory based
NACL:-`Cl^(-)` froms FCC
`Na^(+)` occupy octahedral VOIDS
Effective number of `Cl^(-)` in v.c.=4
Effective number of `Na^(+)` in v.c.=4


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