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An element has atomic weight 93 g "mol"^...

An element has atomic weight 93 g `"mol"^(-1)` and density 11.5 g `cm^(-3)` . It the edge length of its unit cell is 300 pm, identify the type of unit cell.

A

4

B

1

C

2

D

5

Text Solution

Verified by Experts

The correct Answer is:
C
`d = (Zxx M)/(N_A xx a^3)`
`11.5 gcm^(-3) = (93 g"mol"^(-1) xx Z)/(6.023 xx 10^23 xx (3 xx 10^(-8) cm)^3)`
`Z = ([ 11.5gcm^(-3) xx 6.023 xx 10^23 xx (3 xx 10^(-8) cm)^3])/(93g"mol"^(-1)) `
`Z = 2.01 ~~ 2`
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