Three dimensional octrahedarl crystal
Answers
Answer:
Octahedral Crystal
Octahedra are also obtained by the substitute of benzoic acid with salicylic acid or sodium benzoate, indicating that aromatic compounds are promising growth inhibition agents for shape-controllable synthesis.
Answer:
a three-dimensional structure of a crystal lattice you will observe the gaps in between the spheres. These are the voids. As you see that tetrahedral voids are triangular in shape. When two such voids combine, from two different layers they form an octahedral void.
So when the tetrahedral void of the first layer and the tetrahedral void of the second layer align together, they form an octahedral void. Here the void forms at the center of six spheres. So we say the coordination number of an octahedral void is six.
To calculate octahedral void, if the number of spheres in a structure is “n”, then the number of octahedral voids will also be the same. i.e. “n”.
Solved Question for You
Q: If Z is the number of atoms in the unit cell that represents the closest packing sequence ABCABC, the number of tetrahedral voids in the unit cell is equal to:
1. Z
2. 2Z
3. Z/2
4.None of the above
Ans: The correct option is “B”. As we know the number of tetrahedral voids in a closed packed ccp or fcc is double the number of atoms forming the crystal lattice (Z). So the number of voids will be 2Z.
hope it helps you...