question archive i) Bragg's law gives the simple condition under which a diffracted beam can be observed
i) Bragg's law gives the simple condition under which a diffracted beam can be observed
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i) Bragg's law gives the simple condition under which a diffracted beam can be observed. A 0.085 nm beam of parallel X-rays penetrating a set of parallel lattice planes with indice (110) of spacing d and at an angle of incidence θ for the second-order diffraction. The lattice planes are represented behaving as a mirror with 0.17 nm lattice constant as shown in Figure 1. Calculate the value of d and θ.
ii.Miller Indices (hkl) is a set of numbers which quantify the intercepts and thus may be used to uniquely identify the plane or surface. Determine the Miller indices for the planes shown in the following unit cell
iii.Figure below shows face-centred cubic lattice of an inorganic salt consists of two different elements. Determine the chemical formula and name one (1) compound with similar structure.
iv.Element X is a chemical element with atomic number 20. Find the density of this element by showing all the calculation steps and suggest name of this element.
