Advertisements
Advertisements
Question
In which of the following arrangements octahedral voids are formed?
(i) hcp
(ii) bcc
(iii) simple cubic
(iv) fcc
Advertisements
Solution
(i) hcp
(iv) fcc
Explanation:
In hcp and fcc arrangement, octahedral voids are formed. In fcc, the octahedral voids are observed at edge and centre of cube while in bcc and simple cubic, no any octahedral voids are observed. In bcc, cubic voids formed.
APPEARS IN
RELATED QUESTIONS
What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rd of tetrahedral voids?
How will you distinguish between the following pair of terms?
Tetrahedral and octahedral voids
The unit cell of a substance has cations A+ at the corners of the unit cell and the anions B− at the center. The simplest formula of the substance is ____________.
Total number of voids in 0.5 mole of a compound which forms hexagonal close packed structure is ____________.
A compound is formed by two elements A and B. The element B forms cubic close packing and atoms of A occupy `1/3"rd"` of tetrahedral voids. The formula of this compound is ____________.
What is the coordination number of sodium in Na2O?
If AgI crystallises in zinc blende structure with I– ions at lattice points. What fraction of tetrahedral voids is occupied by Ag+ ions?
Which set of following characteristics for ZnS crystal is correct?
Percentages of free space in cubic close packed structure and in the body-centered packed structure are respectively:
The number of octahedral voids present in a lattice is A. The number of closed packed articles, the number of tetrahedral voids generated is B the number of closed packed particles:
If Germanium crystallises in the same way as diamond, then which of the following statement is not correct?
In the cubic close packing, the unit cell has ______.
The coordination number of Y will be in the XY types of crystal:
The number of tetrahedral voids per unit cell in NaCl crystal is:
(i) 4
(ii) 8
(iii) twice the number of octahedral voids.
(iv) four times the number of octahedral voids.
In a compound, nitrogen atoms (N) make cubic close packed lattice and metal atoms (M) occupy one-third of the tetrahedral voids present. Determine the formula of the compound formed by M and N?
A compound is formed by two elements A and B. The element B forms a cubic close-packed structure and atoms of A occupy `1/3` of the tetrahedral voids. If the formula of the compound is AxBy then the value x + y is in the option:
