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In orthorhombic , the value of a, b and ...

In orthorhombic , the value of a, b and c are respectively `4.2Å, 8.6 Å and 8.3Å` .Given the molecular mass of the solur is `155 gm mol^(-1)` and that of density is `3.3 gm//cc` the number of formula unit per unit cell is

A

2

B

3

C

4

D

6

Text Solution

Verified by Experts

The correct Answer is:
C
`Z = (V xx N_(0) xx d)/M`
`=(4.2 xx 8.6 xx 8.3 xx 10^(-24) xx 6.022 xx 10^(23) xx 3.3)/155 = 3.84 = 4`
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