Match the List-I with List-II and List-III:
List-I
(Solids)
List-II
(Unit cell)
List-III
(Coordination number)
(a) Rock salt (p) Face-centred cubic, anion in tetrahedral void (w) 6
(b) Fluorite (q) Face-centred cubic, cation in octahedral void (x) Cation (8), anion (4)
(c) Agl, ZnS (r) Face-centred cubic, cation in alternate tetrahedral void (y) Cation (4), anion (8)
(d) $N a_{2} O$ (s) Face-centred cubic, cation in tetrahedral void (z) Cation (4), anion (4)

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Solution

(a) Rock Salt $(N a C l)$ Cation: All octahedral voids Coordination
Anion:FCC lattice $6 : 6$
(b) Fluorite Cation:FCC lattice, anion-tetrahedral void Coordination
Cation: $8$
Anion: $4$
(c) $Z n S, A g I$ Cation: alternate tetrahedral void Coordination
(Zinc Blende) anion:FCC lattice $4 : 4$
(d) $N a_{2} O$ Cation:tetrahedral voids Coordination
(Antifluorite) anion:FCC lattice Cation: $4$
Anion: $8$

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List-I (Solids)	List-II (Unit cell)	List-III (Coordination number)
(a) Rock salt	(p) Face-centred cubic, anion in tetrahedral void	(w) 6
(b) Fluorite	(q) Face-centred cubic, cation in octahedral void	(x) Cation (8), anion (4)
(c) Agl, ZnS	(r) Face-centred cubic, cation in alternate tetrahedral void	(y) Cation (4), anion (8)
(d) $N a_{2} O$	(s) Face-centred cubic, cation in tetrahedral void	(z) Cation (4), anion (4)