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3. Chromium forms a body centered cubic crystal. If the length of an edge is 2.884 angstroms, calculate the density (g/cm) and the radius of a chromium atom in angstroms.

3. Chromium forms a body centered cubic crystal. If the length of an edge is 2.884 angstroms, calculate the density (g/cm) and the radius of a chromium atom in angstroms.

Chemistry
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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Here is a transcription and detailed explanation of the data on atomic and ionic radii: ### Table of Atomic and Ionic Radii **Atoms and their Radii (in picometers, pm):** - **Na (Sodium)** - **Atomic Radius:** 186 pm - **Ionic Radius:** 95.0 pm - **Se (Selenium)** - **Atomic Radius:** 117 pm - **Ionic Radius:** 191 pm (Se²⁻) - **Cs (Cesium)** - **Atomic Radius:** 265 pm - **Ionic Radius:** 169 pm - **Cl (Chlorine)** - **Atomic Radius:** 99.0 pm - **Ionic Radius:** 181 pm - **Br (Bromine)** - **Atomic Radius:** 114 pm - **Ionic Radius:** 196 pm - **Zn (Zinc)** - **Atomic Radius:** 135 pm - **Ionic Radius:** 74.0 pm - **Tl (Thallium)** - **Atomic Radius:** 170 pm - **Ionic Radius:** 147 pm (Tl⁺) - **K (Potassium)** - **Atomic Radius:** 227 pm - **Ionic Radius:** 133 pm - **S (Sulfur)** - **Atomic Radius:** 104 pm - **Ionic Radius:** 184 pm - **I (Iodine)** - **Atomic Radius:** 133 pm - **Ionic Radius:** 220 pm ### Explanation: - **Atomic Radius:** The atomic radius is a measure of the size of an atom, typically the distance from the nucleus to the boundary of the surrounding cloud of electrons. - **Ionic Radius:** The ionic radius is the measure of an atom's ion in a crystal lattice. It is different from the atomic radius due to the gain or loss of electrons during ionization. The table lists several elements with their respective atomic and ionic radii. Notably, the ionic radius can be larger or smaller than the atomic radius depending on whether the atom gains electrons (becoming a negatively charged anion) or loses electrons (becoming a positively charged cation). For instance, Selenium (Se) and Iodine (I) show larger
Transcribed Image Text:Here is a transcription and detailed explanation of the data on atomic and ionic radii: ### Table of Atomic and Ionic Radii **Atoms and their Radii (in picometers, pm):** - **Na (Sodium)** - **Atomic Radius:** 186 pm - **Ionic Radius:** 95.0 pm - **Se (Selenium)** - **Atomic Radius:** 117 pm - **Ionic Radius:** 191 pm (Se²⁻) - **Cs (Cesium)** - **Atomic Radius:** 265 pm - **Ionic Radius:** 169 pm - **Cl (Chlorine)** - **Atomic Radius:** 99.0 pm - **Ionic Radius:** 181 pm - **Br (Bromine)** - **Atomic Radius:** 114 pm - **Ionic Radius:** 196 pm - **Zn (Zinc)** - **Atomic Radius:** 135 pm - **Ionic Radius:** 74.0 pm - **Tl (Thallium)** - **Atomic Radius:** 170 pm - **Ionic Radius:** 147 pm (Tl⁺) - **K (Potassium)** - **Atomic Radius:** 227 pm - **Ionic Radius:** 133 pm - **S (Sulfur)** - **Atomic Radius:** 104 pm - **Ionic Radius:** 184 pm - **I (Iodine)** - **Atomic Radius:** 133 pm - **Ionic Radius:** 220 pm ### Explanation: - **Atomic Radius:** The atomic radius is a measure of the size of an atom, typically the distance from the nucleus to the boundary of the surrounding cloud of electrons. - **Ionic Radius:** The ionic radius is the measure of an atom's ion in a crystal lattice. It is different from the atomic radius due to the gain or loss of electrons during ionization. The table lists several elements with their respective atomic and ionic radii. Notably, the ionic radius can be larger or smaller than the atomic radius depending on whether the atom gains electrons (becoming a negatively charged anion) or loses electrons (becoming a positively charged cation). For instance, Selenium (Se) and Iodine (I) show larger
3. Chromium forms a body centered cubic crystal. If the length of an edge is 2.884 angstroms, calculate the density (g/cm³) and the radius of a chromium atom in angstroms.
Transcribed Image Text:3. Chromium forms a body centered cubic crystal. If the length of an edge is 2.884 angstroms, calculate the density (g/cm³) and the radius of a chromium atom in angstroms.
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