The coordination No.in 3D close packing of spheres having packing of the type (ABC) (ABC) ...... is Y.Calculate the value of `(Y)/(2)`.

The co-ordination number in 3D-hexagonal close packing is

Calculate the value of (Z)/(10) . Where Z = co-ordination number of 2D-square close packing + Co-ordination number of 2D-hcp + Co-ordination number of 3D-square close packing + Co-ordination number of 3D, ABCABC........packing + Co-ordiantional number of 3D, ABAB.......packing .

In the figure, ABC is a right triangle. What is the value of y?

A (5, x), B (-4, 3) and C (y, -2) are the vertices of the triangle ABC whose centroid is the origin. Calculate the values of x and y.

Calculate the void space in closest packing of n spheres of radius 1 unit, n spheres of radiys 0.414 units, and 2n spheres of radius 0.225 units.

In 3D close packed structures, for every 100 atoms, it contains

What ist the coordination number of each ion present in the closed packed sturctures of (a) Na_(2) O (b) CaF_(2) at ordinary temperature and pressure?

ABC is a triangle and AD is the median. If the coordinates of A are (4,7,-8) and the coordinates of centroid of triangle ABC are (1,1,1) what are the coordinates of D? (A) ((-1)/2,2,11) (B) ((-1)/2,-2,11/2) (C) (-1,2,11) (D) (-5,-11,19)

Fill in the blanks by choosing the appropriate word from those given in the brackets. (isotropic, anisotropic, 0.255–0.414, 0.414–0.732, unit cell AB AB, .... ABC ABC ..., ...., 52.4, 60.4, F-centres, V-centres, 4, 2, hexagonal close packing, square close packing, 6, 8 glass, plastics, lead zirconate, barium titanate) In square close packing pattern of spheres of identical size in one layer, the coordination number of each sphere will be.....

Which of the following statements is/are correct about hexagonal close packing ? 1. The coordination number is 8 2. It is ABAB type packing in which third layer is aligned with the first layer 3. Be, Mg, Mo etc. are found to have hcp structure 4. In hcp, atoms occupy 74% of the available space