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. If the atomic mass of Li and Cl are 7 and 35.5 amu respectively , then what would be number of LiCl molecule in cubic of LiCl withlength x height x breadth = 1 x 1 x 1=1 cm^3 ?

Answer»

NEARLY `2.5xx10^22`
Nearly `4xx10^20`
Nearly `12xx10^30`
Nearly `14xx10^23`

ANSWER :A


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