Statement – I : hcp and ccp structure are equally efficient.
Statement – II : Same number of atoms are present in a hcp and ccp unit cell.
In the light of above statement choose the correct option among the following.
Statement – I : hcp and ccp structure are equally efficient.
Statement – II : Same number of atoms are present in a hcp and ccp unit cell.
In the light of above statement choose the correct option among the following.
Option 1 -
Statement – I is correct, but statement – II is incorrect.
Option 2 -
Statement – I is incorrect, but statement – II is correct.
Option 3 -
Both statement – I and statement – II are correct
Option 4 -
Both statement – I and statement – II are incorrect
-
1 Answer
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Correct Option - 1
Detailed Solution:Packing efficiency for both ccp and hcp structures are 74%
Zccp= ZFCC = 4
ZHCP = 6
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ΔG° = –RT * 2.303 log K
–nFE° = +RT * 2.303 log K
2 * 96500 * 0.295 = 8.314 * 298 * 2.303 log10 K
10 = log10 K = 1010
It has chiral centre and differently di substituted double bonded carbon atoms.
For FCC lattice
Packing efficiency = 
CsCl has BCC structure in which Cl– is present at corners of cube and Cs+ at body centre
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