Advertisements
Advertisements
Question
Assertion: The packing efficiency is maximum for the fcc structure.
Reason: The cordination number is 12 in fcc structures.
Options
Assertion and reason both are correct statements and reason is correct explanation for assertion.
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
Assertion is correct statement but reason is wrong statement.
Assertion is wrong statement but reason is correct statement.
Solution
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
Explanation:
In fcc unit cell, there is cep arrangement with packing efficiency of 74.01% which is maximum. In ccp arrangement, coordination number is 12.
APPEARS IN
RELATED QUESTIONS
Calculate the efficiency of packing in case of a metal crystal for face-centred cubic (with the assumptions that atoms are touching each other).
Coordination number of hcp and ccp is ____________.
Which of the following lattices has the highest packing efficiency?
In cubic close packing (ccp) arrangement, the pattern of the successive layers will be designated as ____________.
The coordination number in hcp is ____________.
Which of the following is the correct increasing order of packing efficiency for hcp, bcc and simple cubic lattice?
When molten zinc is converted into the solid state, it acquires hcp structure. The number of nearest neighbours of Zn will be ____________.
In which pair is most efficient packing is present?
Metal M ions form accp structure. Oxide ions occupy `1/2` octahedral and `1/2` tetrahedral voids. What is the formula of the oxide?
The packing efficiency m hexagonal close packing is ______
