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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Classify each statement as true or false.
- If there is an atom present at the corner of a unit cell, there must be the same type of atom at all corners of the unit cell.
- If one face of a unit cell has an atom in its center, then the face opposite that face must also have an atom at its center.
- If one face of a unit cell has an atom in its center, all the faces of the unit cell must also have atoms at their centers.
- A unit cell must be defined so that there are atoms at the corners.
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- If the density of europium is 5.25 g/cm3 at 20 degrees celsius with a volume of 1.52 x 10-22cm3, what is the mass (in grams)of one unit cell?arrow_forwardMetallic uranium crystallizes in a body-centered cubic lattice, with one U atom per lattice point. If the metallic radius of U is 148.5 pm, what is the volume of the unit cell?arrow_forwardSolid NaF has the so-called NaCl structure. The shortest distance between the centre of a sodium cation and the centre of a fluoride anion is 231.5 pm. Calculate the length of the edge of the conventional face-centred cubic unit cell of NaF. Calculate the density of solid NaF. Calculate the shortest distance (centre to centre) between two fluoride anions in solid NaF.arrow_forward
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