What is the Miller index of the plane ABC shown in the following figure? 50 Z 3 56 У A →x 5a

A crystalline solid is made up of two elements ‘A’ and ‘B’. Atoms of A are present at thecorners and atoms of B are present at face centers. One atom A is missing from the corner.Find the simplest formula of the solid.

What are the x- and y-components Cx and Cy of vector C→?

c) Figure 2 below shows hypothetical 3D unit cell of Orthorhombic Crystal Structure with lattice parameters a = 2 nm, b = 3 nm, and c = 4 nm. a, b and c vectors are orthogonal to each other i.e., a ẞ= y = 90 deg. Draw unit cell reciprocal to the orthorhombic unit cell shown on the picture. Maintain appropriate relationship for the length of real and reciprocal unit cell vectors (3 points) Calculate the volume of the reciprocal unit cell (2 points).

One mole of silicon (6x1023 atoms) has a mass of 28 grams, as shown in the periodic table on the inside front cover of the textbook. The density of silicon is 2.4 grams/cm³. What is the approximate diameter of a silicon atom (length of a bond) in a solid block of the material? Make the simplifying assumption that the atoms are arranged in a "cubic" array, as shown in the figure. Remember to convert to SI units. d =

Q2/ Calculate the decompositlon energy of a molecule HgH, If the vibrational levels of the molecule converge rapidly. The successive periods are as follows: Interval 1/cm 1-0 1203.7 2 1 965.6 3 2 632.4 4 - 3 172

What is the packing fraction of a BCC (body-centered cubic) unit cell? 1 /3T (h)