1.

NaCl is a AB type of solid . Its crystalline structure is known as rock salt structure in which r_"Na"^+ and r_"Cl"^- are 95 and 181 pm respectively , where Cl^- is present at the lattice point of face centered cubic unit cell Na^+ ions are located in void and those compounds which have same crystalline structure also have same coordination system in which Na^+ and Cl^- ions are surrounded by certain number of opposite ions respectively. Under high pressure coordination number changes to 8 :8 type from 6 :6 type. LiCl adopts rock salt crystalline structure in which edge length is 5.40 Å. What would be the radii of Li^+ ?

Answer»

0.89 Å
2.7 Å
1.78 Å
0.98 Å

Answer :A


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