Answer the fóllowing questions: |(a) If the crystal lattice constant for a metal is equal to (4.5 A), the type of crystal structure is Face centered cube, and the atomic weight equal to (25 g/m), when the temperature is equal to (900 °C); Calculate the following: 1. Diameter and density of the sodium, 2. Number of atoms in (1m³), 3. Density of free electrons if the material is trivalent. (b) For this metal; when the temperature is decreased below (900 oC); the crystal lattice type is changed from FCC to BCC, if we assumed that the radius of the atom is constant in both cases; calculate the density change.

Answer the fóllowing questions: |(a) If the crystal lattice constant for a metal is equal to (4.5 A), the type of crystal structure is Face centered cube, and the atomic weight equal to (25 g/m), when the temperature is equal to (900 °C); Calculate the following: 1. Diameter and density of the sodium, 2. Number of atoms in (1m³), 3. Density of free electrons if the material is trivalent. (b) For this metal; when the temperature is decreased below (900 oC); the crystal lattice type is changed from FCC to BCC, if we assumed that the radius of the atom is constant in both cases; calculate the density change.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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