c) Calculate the theoretical density of the Zno. Hint: calculate the volume of unit cell from consideration of your sketch in Part a) and calculate the mass of the unit cell from the numbers of atoms the unit cell "owns". Compare your result with a reliable published description (state the citation source). Data: Atomic Radius (pm) Element Zinc (Zn) Oxygen (0) Avagadro's Number: NA = 6.022 x 1023 mol Atomic Mass (g/mol) 65.38 lonic Radius (pm) 74 (Zn) 140 (0) 133 16.00 74

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A: Electron affinity is defined as amount of energy released when electron is added to system.

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Q: the IR spectrum

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Q: methyl group.

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Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.